72306474 has 32 divisors (see below), whose sum is σ = 154094400. Its totient is φ = 22540032.

The previous prime is 72306461. The next prime is 72306497. The reversal of 72306474 is 47460327.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14452 + ... + 18800.

It is an arithmetic number, because the mean of its divisors is an integer number (4815450).

Almost surely, 2^72306474 is an apocalyptic number.

72306474 is an abundant number, since it is smaller than the sum of its proper divisors (81787926).

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

72306474 is a wasteful number, since it uses less digits than its factorization.

72306474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4534.

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 72306474 is about 8503.3213510957. The cubic root of 72306474 is about 416.6061990830.

The spelling of 72306474 in words is "seventy-two million, three hundred six thousand, four hundred seventy-four".