72192944 has 10 divisors (see below), whose sum is σ = 139873860. Its totient is φ = 36096464.

The previous prime is 72192917. The next prime is 72192947. The reversal of 72192944 is 44929127.

It is a junction number, because it is equal to n+sod(n) for n = 72192898 and 72192907.

It is not an unprimeable number, because it can be changed into a prime (72192947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2256014 + ... + 2256045.

It is an arithmetic number, because the mean of its divisors is an integer number (13987386).

Almost surely, 2^72192944 is an apocalyptic number.

It is an amenable number.

72192944 is a deficient number, since it is larger than the sum of its proper divisors (67680916).

72192944 is a wasteful number, since it uses less digits than its factorization.

72192944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4512067 (or 4512061 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 72192944 is about 8496.6431018373. The cubic root of 72192944 is about 416.3880439859.

The spelling of 72192944 in words is "seventy-two million, one hundred ninety-two thousand, nine hundred forty-four".