72086972 has 6 divisors (see below), whose sum is σ = 126152208. Its totient is φ = 36043484.

The previous prime is 72086951. The next prime is 72086981. The reversal of 72086972 is 27968027.

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, 9010868 + ... + 9010875.

It is an arithmetic number, because the mean of its divisors is an integer number (21025368).

Almost surely, 2^72086972 is an apocalyptic number.

It is an amenable number.

72086972 is a deficient number, since it is larger than the sum of its proper divisors (54065236).

72086972 is a wasteful number, since it uses less digits than its factorization.

72086972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18021747 (or 18021745 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 72086972 is about 8490.4047017795. The cubic root of 72086972 is about 416.1842055885.

The spelling of 72086972 in words is "seventy-two million, eighty-six thousand, nine hundred seventy-two".