72237892 has 6 divisors (see below), whose sum is σ = 126416318. Its totient is φ = 36118944.

The previous prime is 72237857. The next prime is 72237901. The reversal of 72237892 is 29873227.

It can be written as a sum of positive squares in only one way, i.e., 68293696 + 3944196 = 8264^2 + 1986^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9029733 + ... + 9029740.

Almost surely, 2^72237892 is an apocalyptic number.

It is an amenable number.

72237892 is a deficient number, since it is larger than the sum of its proper divisors (54178426).

72237892 is a wasteful number, since it uses less digits than its factorization.

72237892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18059477 (or 18059475 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 72237892 is about 8499.2877348634. The cubic root of 72237892 is about 416.4744417504.

The spelling of 72237892 in words is "seventy-two million, two hundred thirty-seven thousand, eight hundred ninety-two".