72144892 has 12 divisors (see below), whose sum is σ = 127162840. Its totient is φ = 35812656.

The previous prime is 72144887. The next prime is 72144893. The reversal of 72144892 is 29844127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72144893) 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, 64323 + ... + 65434.

Almost surely, 2^72144892 is an apocalyptic number.

It is an amenable number.

72144892 is a deficient number, since it is larger than the sum of its proper divisors (55017948).

72144892 is a wasteful number, since it uses less digits than its factorization.

72144892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129900 (or 129898 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 72144892 is about 8493.8149261683. The cubic root of 72144892 is about 416.2956401302.

The spelling of 72144892 in words is "seventy-two million, one hundred forty-four thousand, eight hundred ninety-two".