72609392 has 20 divisors (see below), whose sum is σ = 144484056. Its totient is φ = 35323200.

The previous prime is 72609391. The next prime is 72609419. The reversal of 72609392 is 29390627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72609391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60734 + ... + 61917.

Almost surely, 2^72609392 is an apocalyptic number.

It is an amenable number.

72609392 is a deficient number, since it is larger than the sum of its proper divisors (71874664).

72609392 is a wasteful number, since it uses less digits than its factorization.

72609392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122696 (or 122690 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 72609392 is about 8521.1144810993. The cubic root of 72609392 is about 417.1871599552.

The spelling of 72609392 in words is "seventy-two million, six hundred nine thousand, three hundred ninety-two".