31849664 has 112 divisors (see below), whose sum is σ = 82515456. Its totient is φ = 11827200.

The previous prime is 31849651. The next prime is 31849667. The reversal of 31849664 is 46694813.

It is a tau number, because it is divible by the number of its divisors (112).

Its product of digits (124416) is a multiple of the sum of its prime divisors (324).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31849667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113204 + ... + 113484.

Almost surely, 2^31849664 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 31849664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41257728).

31849664 is an abundant number, since it is smaller than the sum of its proper divisors (50665792).

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

31849664 is a wasteful number, since it uses less digits than its factorization.

31849664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 324 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 31849664 is about 5643.5506553942. The cubic root of 31849664 is about 316.9822557712.

The spelling of 31849664 in words is "thirty-one million, eight hundred forty-nine thousand, six hundred sixty-four".