72445842 has 24 divisors (see below), whose sum is σ = 179390016. Its totient is φ = 20698776.

The previous prime is 72445829. The next prime is 72445843. The reversal of 72445842 is 24854427.

72445842 is a `hidden beast` number, since 72 + 4 + 4 + 584 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 72445797 and 72445806.

It is not an unprimeable number, because it can be changed into a prime (72445843) 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 11 ways as a sum of consecutive naturals, for example, 287358 + ... + 287609.

It is an arithmetic number, because the mean of its divisors is an integer number (7474584).

Almost surely, 2^72445842 is an apocalyptic number.

72445842 is an abundant number, since it is smaller than the sum of its proper divisors (106944174).

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

72445842 is a wasteful number, since it uses less digits than its factorization.

72445842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574982 (or 574979 counting only the distinct ones).

The product of its digits is 71680, while the sum is 36.

The square root of 72445842 is about 8511.5123215560. The cubic root of 72445842 is about 416.8736915384.

The spelling of 72445842 in words is "seventy-two million, four hundred forty-five thousand, eight hundred forty-two".