72407998 has 16 divisors (see below), whose sum is σ = 123847920. Its totient is φ = 31453056.

The previous prime is 72407977. The next prime is 72408013. The reversal of 72407998 is 89970427.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81468 + ... + 82351.

It is an arithmetic number, because the mean of its divisors is an integer number (7740495).

Almost surely, 2^72407998 is an apocalyptic number.

72407998 is a deficient number, since it is larger than the sum of its proper divisors (51439922).

72407998 is a wasteful number, since it uses less digits than its factorization.

72407998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163851.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 72407998 is about 8509.2889244637. The cubic root of 72407998 is about 416.8010905656.

The spelling of 72407998 in words is "seventy-two million, four hundred seven thousand, nine hundred ninety-eight".