72427772 has 12 divisors (see below), whose sum is σ = 133419720. Its totient is φ = 34307856.

The previous prime is 72427763. The next prime is 72427793. The reversal of 72427772 is 27772427.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476423 + ... + 476574.

It is an arithmetic number, because the mean of its divisors is an integer number (11118310).

Almost surely, 2^72427772 is an apocalyptic number.

It is an amenable number.

72427772 is a deficient number, since it is larger than the sum of its proper divisors (60991948).

72427772 is a wasteful number, since it uses less digits than its factorization.

72427772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953020 (or 953018 counting only the distinct ones).

The product of its digits is 76832, while the sum is 38.

The square root of 72427772 is about 8510.4507518697. The cubic root of 72427772 is about 416.8390287071.

The spelling of 72427772 in words is "seventy-two million, four hundred twenty-seven thousand, seven hundred seventy-two".