72313458 has 16 divisors (see below), whose sum is σ = 165288000. Its totient is φ = 20660976.

The previous prime is 72313457. The next prime is 72313459. The reversal of 72313458 is 85431327.

It is an interprime number because it is at equal distance from previous prime (72313457) and next prime (72313459).

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (72313453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860833 + ... + 860916.

It is an arithmetic number, because the mean of its divisors is an integer number (10330500).

Almost surely, 2^72313458 is an apocalyptic number.

72313458 is an abundant number, since it is smaller than the sum of its proper divisors (92974542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72313458 is a wasteful number, since it uses less digits than its factorization.

72313458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721761.

The product of its digits is 20160, while the sum is 33.

The square root of 72313458 is about 8503.7320042438. The cubic root of 72313458 is about 416.6196118240.

It can be divided in two parts, 72313 and 458, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 72313458 in words is "seventy-two million, three hundred thirteen thousand, four hundred fifty-eight".