72789612 has 48 divisors (see below), whose sum is σ = 200374272. Its totient is φ = 20125440.

The previous prime is 72789569. The next prime is 72789667. The reversal of 72789612 is 21698727.

It is a super-2 number, since 2×72789612² = 10596655230221088, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11373 + ... + 16580.

It is an arithmetic number, because the mean of its divisors is an integer number (4174464).

Almost surely, 2^72789612 is an apocalyptic number.

It is an amenable number.

72789612 is an abundant number, since it is smaller than the sum of its proper divisors (127584660).

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

72789612 is a wasteful number, since it uses less digits than its factorization.

72789612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27998 (or 27996 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 72789612 is about 8531.6828351738. The cubic root of 72789612 is about 417.5320343068.

The spelling of 72789612 in words is "seventy-two million, seven hundred eighty-nine thousand, six hundred twelve".