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72988608 = 2637114937
BaseRepresentation
bin1000101100110…
…11011111000000
312002100012112210
410112123133000
5122141113413
611124222120
71544251530
oct426333700
9162305483
1072988608
1138222470
122053a940
1312176c34
14999d4c0
15661b3c3
hex459b7c0

72988608 has 112 divisors (see below), whose sum is σ = 240816384. Its totient is φ = 18954240.

The previous prime is 72988607. The next prime is 72988609. The reversal of 72988608 is 80688927.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72988607) and next prime (72988609).

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72988607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12316 + ... + 17252.

Almost surely, 272988608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72988608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120408192).

72988608 is an abundant number, since it is smaller than the sum of its proper divisors (167827776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72988608 is a wasteful number, since it uses less digits than its factorization.

72988608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4970 (or 4960 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 72988608 is about 8543.3370529320. The cubic root of 72988608 is about 417.9121783098.

The spelling of 72988608 in words is "seventy-two million, nine hundred eighty-eight thousand, six hundred eight".

Divisors: 1 2 3 4 6 7 8 11 12 14 16 21 22 24 28 32 33 42 44 48 56 64 66 77 84 88 96 112 132 154 168 176 192 224 231 264 308 336 352 448 462 528 616 672 704 924 1056 1232 1344 1848 2112 2464 3696 4928 4937 7392 9874 14784 14811 19748 29622 34559 39496 54307 59244 69118 78992 103677 108614 118488 138236 157984 162921 207354 217228 236976 276472 315968 325842 380149 414708 434456 473952 552944 651684 760298 829416 868912 947904 1105888 1140447 1303368 1520596 1658832 1737824 2211776 2280894 2606736 3041192 3317664 3475648 4561788 5213472 6082384 6635328 9123576 10426944 12164768 18247152 24329536 36494304 72988608