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72919068 = 22331211929
BaseRepresentation
bin1000101100010…
…10100000011100
312002012200011020
410112022200130
5122131402233
611122524140
71543542015
oct426124034
9162180136
1072919068
11381851a2
1220506650
13121513a1
14998200c
1566059b3
hex458a81c

72919068 has 48 divisors (see below), whose sum is σ = 176655360. Its totient is φ = 23385600.

The previous prime is 72919061. The next prime is 72919081. The reversal of 72919068 is 86091927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72919061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78028 + ... + 78956.

It is an arithmetic number, because the mean of its divisors is an integer number (3680320).

Almost surely, 272919068 is an apocalyptic number.

It is an amenable number.

72919068 is an abundant number, since it is smaller than the sum of its proper divisors (103736292).

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

72919068 is a wasteful number, since it uses less digits than its factorization.

72919068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 72919068 is about 8539.2662448246. The cubic root of 72919068 is about 417.7794139965.

The spelling of 72919068 in words is "seventy-two million, nine hundred nineteen thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 31 62 93 124 186 211 372 422 633 844 929 1266 1858 2532 2787 3716 5574 6541 11148 13082 19623 26164 28799 39246 57598 78492 86397 115196 172794 196019 345588 392038 588057 784076 1176114 2352228 6076589 12153178 18229767 24306356 36459534 72919068