72312465 has 32 divisors (see below), whose sum is σ = 118972800. Its totient is φ = 37491200.

The previous prime is 72312379. The next prime is 72312521. The reversal of 72312465 is 56421327.

It is not a de Polignac number, because 72312465 - 2⁷ = 72312337 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88981 + ... + 89789.

It is an arithmetic number, because the mean of its divisors is an integer number (3717900).

Almost surely, 2^72312465 is an apocalyptic number.

It is an amenable number.

72312465 is a deficient number, since it is larger than the sum of its proper divisors (46660335).

72312465 is a wasteful number, since it uses less digits than its factorization.

72312465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977.

The product of its digits is 10080, while the sum is 30.

The square root of 72312465 is about 8503.6736179136. The cubic root of 72312465 is about 416.6177048246.

The spelling of 72312465 in words is "seventy-two million, three hundred twelve thousand, four hundred sixty-five".