72716478 has 16 divisors (see below), whose sum is σ = 151756416. Its totient is φ = 23184920.

The previous prime is 72716461. The next prime is 72716489. The reversal of 72716478 is 87461727.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 263328 + ... + 263603.

It is an arithmetic number, because the mean of its divisors is an integer number (9484776).

Almost surely, 2^72716478 is an apocalyptic number.

72716478 is an abundant number, since it is smaller than the sum of its proper divisors (79039938).

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

72716478 is a wasteful number, since it uses less digits than its factorization.

72716478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526959.

The product of its digits is 131712, while the sum is 42.

The square root of 72716478 is about 8527.3957337513. The cubic root of 72716478 is about 417.3921516164.

It can be divided in two parts, 727 and 16478, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 72716478 in words is "seventy-two million, seven hundred sixteen thousand, four hundred seventy-eight".