72089658 has 24 divisors (see below), whose sum is σ = 156885300. Its totient is φ = 23923584.

The previous prime is 72089623. The next prime is 72089669. The reversal of 72089658 is 85698027.

It can be written as a sum of positive squares in 2 ways, for example, as 71115489 + 974169 = 8433^2 + 987^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4623 + ... + 12866.

Almost surely, 2^72089658 is an apocalyptic number.

72089658 is an abundant number, since it is smaller than the sum of its proper divisors (84795642).

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

72089658 is a wasteful number, since it uses less digits than its factorization.

72089658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17726 (or 17723 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 72089658 is about 8490.5628788673. The cubic root of 72089658 is about 416.1893746080.

The spelling of 72089658 in words is "seventy-two million, eighty-nine thousand, six hundred fifty-eight".