72401197 has 24 divisors (see below), whose sum is σ = 84268800. Its totient is φ = 62055840.

The previous prime is 72401159. The next prime is 72401227. The reversal of 72401197 is 79110427.

It is a de Polignac number, because none of the positive numbers 2^k-72401197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72401107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164704 + ... + 165142.

It is an arithmetic number, because the mean of its divisors is an integer number (3511200).

Almost surely, 2^72401197 is an apocalyptic number.

It is an amenable number.

72401197 is a deficient number, since it is larger than the sum of its proper divisors (11867603).

72401197 is a wasteful number, since it uses less digits than its factorization.

72401197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 72401197 is about 8508.8892929689. The cubic root of 72401197 is about 416.7880406584.

The spelling of 72401197 in words is "seventy-two million, four hundred one thousand, one hundred ninety-seven".