72147064 has 16 divisors (see below), whose sum is σ = 147573720. Its totient is φ = 32794080.

The previous prime is 72147043. The next prime is 72147091. The reversal of 72147064 is 46074127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409839 + ... + 410014.

Almost surely, 2^72147064 is an apocalyptic number.

It is an amenable number.

72147064 is an abundant number, since it is smaller than the sum of its proper divisors (75426656).

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

72147064 is a wasteful number, since it uses less digits than its factorization.

72147064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819870 (or 819866 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 72147064 is about 8493.9427829483. The cubic root of 72147064 is about 416.2998177651.

The spelling of 72147064 in words is "seventy-two million, one hundred forty-seven thousand, sixty-four".