264918990 has 96 divisors (see below), whose sum is σ = 783190944. Its totient is φ = 56985600.

The previous prime is 264918989. The next prime is 264919013. The reversal of 264918990 is 99819462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19690 + ... + 30290.

It is an arithmetic number, because the mean of its divisors is an integer number (8158239).

Almost surely, 2^264918990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264918990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391595472).

264918990 is an abundant number, since it is smaller than the sum of its proper divisors (518271954).

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

264918990 is a wasteful number, since it uses less digits than its factorization.

264918990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10642 (or 10635 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 264918990 is about 16276.3322035402. The cubic root of 264918990 is about 642.2503706066.

The spelling of 264918990 in words is "two hundred sixty-four million, nine hundred eighteen thousand, nine hundred ninety".