72988688 has 20 divisors (see below), whose sum is σ = 142014720. Its totient is φ = 36339744.

The previous prime is 72988687. The next prime is 72988691. The reversal of 72988688 is 88688927.

It is a super-2 number, since 2×72988688² = 10654697151922688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72988687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5720 + ... + 13367.

It is an arithmetic number, because the mean of its divisors is an integer number (7100736).

Almost surely, 2^72988688 is an apocalyptic number.

It is an amenable number.

72988688 is a deficient number, since it is larger than the sum of its proper divisors (69026032).

72988688 is a wasteful number, since it uses less digits than its factorization.

72988688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19334 (or 19328 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 56.

The square root of 72988688 is about 8543.3417349419. The cubic root of 72988688 is about 417.9123309956.

The spelling of 72988688 in words is "seventy-two million, nine hundred eighty-eight thousand, six hundred eighty-eight".