31976448 has 88 divisors (see below), whose sum is σ = 97469952. Its totient is φ = 9129984.

The previous prime is 31976447. The next prime is 31976467. The reversal of 31976448 is 84467913.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (31976447) 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, 20761 + ... + 22247.

Almost surely, 2^31976448 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 31976448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48734976).

31976448 is an abundant number, since it is smaller than the sum of its proper divisors (65493504).

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

31976448 is a wasteful number, since it uses less digits than its factorization.

31976448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517 (or 1499 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 31976448 is about 5654.7721439506. The cubic root of 31976448 is about 317.4023027989.

It can be divided in two parts, 319 and 76448, that added together give a palindrome (76767).

The spelling of 31976448 in words is "thirty-one million, nine hundred seventy-six thousand, four hundred forty-eight".