72412978 has 16 divisors (see below), whose sum is σ = 120438720. Its totient is φ = 32374800.

The previous prime is 72412973. The next prime is 72413051. The reversal of 72412978 is 87921427.

It is a self number, because there is not a number n which added to its sum of digits gives 72412978.

It is not an unprimeable number, because it can be changed into a prime (72412973) by changing a digit.

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, 25638 + ... + 28321.

It is an arithmetic number, because the mean of its divisors is an integer number (7527420).

Almost surely, 2^72412978 is an apocalyptic number.

72412978 is a deficient number, since it is larger than the sum of its proper divisors (48025742).

72412978 is a wasteful number, since it uses less digits than its factorization.

72412978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54033.

The product of its digits is 56448, while the sum is 40.

The square root of 72412978 is about 8509.5815408280. The cubic root of 72412978 is about 416.8106457801.

The spelling of 72412978 in words is "seventy-two million, four hundred twelve thousand, nine hundred seventy-eight".