72994197 has 16 divisors (see below), whose sum is σ = 99792000. Its totient is φ = 47441472.

The previous prime is 72994193. The next prime is 72994199. The reversal of 72994197 is 79149927.

It is a happy number.

It is not a de Polignac number, because 72994197 - 2² = 72994193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72994193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25179 + ... + 27927.

It is an arithmetic number, because the mean of its divisors is an integer number (6237000).

Almost surely, 2^72994197 is an apocalyptic number.

It is an amenable number.

72994197 is a deficient number, since it is larger than the sum of its proper divisors (26797803).

72994197 is a wasteful number, since it uses less digits than its factorization.

72994197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972.

The product of its digits is 285768, while the sum is 48.

The square root of 72994197 is about 8543.6641436798. The cubic root of 72994197 is about 417.9228450500.

The spelling of 72994197 in words is "seventy-two million, nine hundred ninety-four thousand, one hundred ninety-seven".