72193432 has 16 divisors (see below), whose sum is σ = 136175760. Its totient is φ = 35879904.

The previous prime is 72193427. The next prime is 72193447. The reversal of 72193432 is 23439127.

It is a junction number, because it is equal to n+sod(n) for n = 72193394 and 72193403.

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, 25683 + ... + 28354.

It is an arithmetic number, because the mean of its divisors is an integer number (8510985).

Almost surely, 2^72193432 is an apocalyptic number.

It is an amenable number.

72193432 is a deficient number, since it is larger than the sum of its proper divisors (63982328).

72193432 is a wasteful number, since it uses less digits than its factorization.

72193432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54210 (or 54206 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 72193432 is about 8496.6718190124. The cubic root of 72193432 is about 416.3889821981.

The spelling of 72193432 in words is "seventy-two million, one hundred ninety-three thousand, four hundred thirty-two".