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72498672 = 2433257653
BaseRepresentation
bin1000101001000…
…11110111110000
312001102022111000
410110203313300
5122024424142
611105522000
71540141251
oct424436760
9161368430
1072498672
1137a18364
1220343300
1312034c2c
1498b2b28
15657114c
hex4523df0

72498672 has 80 divisors (see below), whose sum is σ = 209227680. Its totient is φ = 24035328.

The previous prime is 72498667. The next prime is 72498689. The reversal of 72498672 is 27689427.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 110698 + ... + 111350.

It is an arithmetic number, because the mean of its divisors is an integer number (2615346).

Almost surely, 272498672 is an apocalyptic number.

72498672 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72498672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104613840).

72498672 is an abundant number, since it is smaller than the sum of its proper divisors (136729008).

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

72498672 is a wasteful number, since it uses less digits than its factorization.

72498672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 915 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 72498672 is about 8514.6151997609. The cubic root of 72498672 is about 416.9749997951.

The spelling of 72498672 in words is "seventy-two million, four hundred ninety-eight thousand, six hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 257 432 514 653 771 1028 1306 1542 1959 2056 2313 2612 3084 3918 4112 4626 5224 5877 6168 6939 7836 9252 10448 11754 12336 13878 15672 17631 18504 23508 27756 31344 35262 37008 47016 55512 70524 94032 111024 141048 167821 282096 335642 503463 671284 1006926 1342568 1510389 2013852 2685136 3020778 4027704 4531167 6041556 8055408 9062334 12083112 18124668 24166224 36249336 72498672