72612423 has 64 divisors (see below), whose sum is σ = 125959680. Its totient is φ = 40932864.

The previous prime is 72612401. The next prime is 72612437. The reversal of 72612423 is 32421627.

72612423 is a `hidden beast` number, since 7 + 2 + 612 + 42 + 3 = 666.

It is not a de Polignac number, because 72612423 - 2⁶ = 72612359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72612493) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 256440 + ... + 256722.

It is an arithmetic number, because the mean of its divisors is an integer number (1968120).

Almost surely, 2^72612423 is an apocalyptic number.

72612423 is a deficient number, since it is larger than the sum of its proper divisors (53347257).

72612423 is a wasteful number, since it uses less digits than its factorization.

72612423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 359 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 72612423 is about 8521.2923315657. The cubic root of 72612423 is about 417.1929648823.

The spelling of 72612423 in words is "seventy-two million, six hundred twelve thousand, four hundred twenty-three".