72111088 has 20 divisors (see below), whose sum is σ = 159674800. Its totient is φ = 30904704.

The previous prime is 72111073. The next prime is 72111103. The reversal of 72111088 is 88011127.

It is an interprime number because it is at equal distance from previous prime (72111073) and next prime (72111103).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321813 + ... + 322036.

It is an arithmetic number, because the mean of its divisors is an integer number (7983740).

Almost surely, 2^72111088 is an apocalyptic number.

It is an amenable number.

72111088 is an abundant number, since it is smaller than the sum of its proper divisors (87563712).

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

72111088 is a wasteful number, since it uses less digits than its factorization.

72111088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643864 (or 643858 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 72111088 is about 8491.8247744522. The cubic root of 72111088 is about 416.2306105491.

The spelling of 72111088 in words is "seventy-two million, one hundred eleven thousand, eighty-eight".