72237474 has 16 divisors (see below), whose sum is σ = 160527840. Its totient is φ = 24079140.

The previous prime is 72237467. The next prime is 72237479. The reversal of 72237474 is 47473227.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (72237479) 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, 668812 + ... + 668919.

It is an arithmetic number, because the mean of its divisors is an integer number (10032990).

Almost surely, 2^72237474 is an apocalyptic number.

72237474 is an abundant number, since it is smaller than the sum of its proper divisors (88290366).

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

72237474 is a wasteful number, since it uses less digits than its factorization.

72237474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337742 (or 1337736 counting only the distinct ones).

The product of its digits is 65856, while the sum is 36.

The square root of 72237474 is about 8499.2631445320. The cubic root of 72237474 is about 416.4736384478.

The spelling of 72237474 in words is "seventy-two million, two hundred thirty-seven thousand, four hundred seventy-four".