31464928 has 48 divisors (see below), whose sum is σ = 68584320. Its totient is φ = 14089600.

The previous prime is 31464883. The next prime is 31464941. The reversal of 31464928 is 82946413.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24363 + ... + 25621.

It is an arithmetic number, because the mean of its divisors is an integer number (1428840).

Almost surely, 2^31464928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31464928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34292160).

31464928 is an abundant number, since it is smaller than the sum of its proper divisors (37119392).

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

31464928 is a wasteful number, since it uses less digits than its factorization.

31464928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 1343 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 31464928 is about 5609.3607478928. The cubic root of 31464928 is about 315.7007261100.

The spelling of 31464928 in words is "thirty-one million, four hundred sixty-four thousand, nine hundred twenty-eight".