72011788 has 12 divisors (see below), whose sum is σ = 127269072. Its totient is φ = 35649200.

The previous prime is 72011783. The next prime is 72011809. The reversal of 72011788 is 88711027.

It is a super-2 number, since 2×72011788² = 10371395221913888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72011783) 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, 88720 + ... + 89527.

It is an arithmetic number, because the mean of its divisors is an integer number (10605756).

Almost surely, 2^72011788 is an apocalyptic number.

It is an amenable number.

72011788 is a deficient number, since it is larger than the sum of its proper divisors (55257284).

72011788 is a wasteful number, since it uses less digits than its factorization.

72011788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178352 (or 178350 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 34.

The square root of 72011788 is about 8485.9759603713. The cubic root of 72011788 is about 416.0394671012.

The spelling of 72011788 in words is "seventy-two million, eleven thousand, seven hundred eighty-eight".