72473442 has 32 divisors (see below), whose sum is σ = 147510720. Its totient is φ = 23734080.

The previous prime is 72473413. The next prime is 72473461. The reversal of 72473442 is 24437427.

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 15 ways as a sum of consecutive naturals, for example, 133692 + ... + 134232.

It is an arithmetic number, because the mean of its divisors is an integer number (4609710).

Almost surely, 2^72473442 is an apocalyptic number.

72473442 is an abundant number, since it is smaller than the sum of its proper divisors (75037278).

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

72473442 is a wasteful number, since it uses less digits than its factorization.

72473442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898.

The product of its digits is 37632, while the sum is 33.

The square root of 72473442 is about 8513.1335006565. The cubic root of 72473442 is about 416.9266241970.

The spelling of 72473442 in words is "seventy-two million, four hundred seventy-three thousand, four hundred forty-two".