72789692 has 6 divisors (see below), whose sum is σ = 127381968. Its totient is φ = 36394844.

The previous prime is 72789677. The next prime is 72789709. The reversal of 72789692 is 29698727.

It is a happy number.

It is a super-2 number, since 2×72789692² = 10596678522909728, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 72789692.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9098708 + ... + 9098715.

It is an arithmetic number, because the mean of its divisors is an integer number (21230328).

Almost surely, 2^72789692 is an apocalyptic number.

It is an amenable number.

72789692 is a deficient number, since it is larger than the sum of its proper divisors (54592276).

72789692 is a wasteful number, since it uses less digits than its factorization.

72789692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18197427 (or 18197425 counting only the distinct ones).

The product of its digits is 762048, while the sum is 50.

The square root of 72789692 is about 8531.6875235794. The cubic root of 72789692 is about 417.5321872707.

The spelling of 72789692 in words is "seventy-two million, seven hundred eighty-nine thousand, six hundred ninety-two".