72868406 has 12 divisors (see below), whose sum is σ = 118357812. Its totient is φ = 33631416.

The previous prime is 72868403. The next prime is 72868417. The reversal of 72868406 is 60486827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72868403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107456 + ... + 108131.

It is an arithmetic number, because the mean of its divisors is an integer number (9863151).

Almost surely, 2^72868406 is an apocalyptic number.

72868406 is a deficient number, since it is larger than the sum of its proper divisors (45489406).

72868406 is a wasteful number, since it uses less digits than its factorization.

72868406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215615 (or 215602 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 72868406 is about 8536.2993152771. The cubic root of 72868406 is about 417.6826380097.

The spelling of 72868406 in words is "seventy-two million, eight hundred sixty-eight thousand, four hundred six".