72088981 has 8 divisors (see below), whose sum is σ = 74697728. Its totient is φ = 69498000.

The previous prime is 72088967. The next prime is 72088997. The reversal of 72088981 is 18988027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72088981 - 2⁵ = 72088949 is a prime.

It is a super-2 number, since 2×72088981² = 10393642363236722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72088901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4111 + ... + 12691.

It is an arithmetic number, because the mean of its divisors is an integer number (9337216).

Almost surely, 2^72088981 is an apocalyptic number.

It is an amenable number.

72088981 is a deficient number, since it is larger than the sum of its proper divisors (2608747).

72088981 is a wasteful number, since it uses less digits than its factorization.

72088981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8883.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 72088981 is about 8490.5230109811. The cubic root of 72088981 is about 416.1880717809.

The spelling of 72088981 in words is "seventy-two million, eighty-eight thousand, nine hundred eighty-one".