331749504 has 48 divisors (see below), whose sum is σ = 954647070. Its totient is φ = 110582784.

The previous prime is 331749503. The next prime is 331749521. The reversal of 331749504 is 405947133.

It can be written as a sum of positive squares in only one way, i.e., 328334400 + 3415104 = 18120^2 + 1848^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×331749504² = 220115466808492032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (331749503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142837 + ... + 145140.

Almost surely, 2^331749504 is an apocalyptic number.

It is an amenable number.

331749504 is an abundant number, since it is smaller than the sum of its proper divisors (622897566).

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

331749504 is a wasteful number, since it uses less digits than its factorization.

331749504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287997 (or 287982 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 331749504 is about 18213.9919841862. The cubic root of 331749504 is about 692.2613645124.

The spelling of 331749504 in words is "three hundred thirty-one million, seven hundred forty-nine thousand, five hundred four".