31472772 has 24 divisors (see below), whose sum is σ = 75969600. Its totient is φ = 10129056.

The previous prime is 31472723. The next prime is 31472773. The reversal of 31472772 is 27727413.

It is not an unprimeable number, because it can be changed into a prime (31472773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44872 + ... + 45567.

It is an arithmetic number, because the mean of its divisors is an integer number (3165400).

Almost surely, 2^31472772 is an apocalyptic number.

It is an amenable number.

31472772 is an abundant number, since it is smaller than the sum of its proper divisors (44496828).

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

31472772 is a wasteful number, since it uses less digits than its factorization.

31472772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90475 (or 90473 counting only the distinct ones).

The product of its digits is 16464, while the sum is 33.

The square root of 31472772 is about 5610.0598927284. The cubic root of 31472772 is about 315.7269579698.

The spelling of 31472772 in words is "thirty-one million, four hundred seventy-two thousand, seven hundred seventy-two".