72889492 has 12 divisors (see below), whose sum is σ = 137368756. Its totient is φ = 33641280.

The previous prime is 72889483. The next prime is 72889511. The reversal of 72889492 is 29498827.

It can be written as a sum of positive squares in 2 ways, for example, as 7376656 + 65512836 = 2716^2 + 8094^2 .

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, 700809 + ... + 700912.

Almost surely, 2^72889492 is an apocalyptic number.

It is an amenable number.

72889492 is a deficient number, since it is larger than the sum of its proper divisors (64479264).

72889492 is a wasteful number, since it uses less digits than its factorization.

72889492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401738 (or 1401736 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 72889492 is about 8537.5343044699. The cubic root of 72889492 is about 417.7229225317.

The spelling of 72889492 in words is "seventy-two million, eight hundred eighty-nine thousand, four hundred ninety-two".