263264920 has 64 divisors (see below), whose sum is σ = 609444000. Its totient is φ = 102294528.

The previous prime is 263264917. The next prime is 263264933. The reversal of 263264920 is 29462362.

It is a happy number.

263264920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462396 + ... + 462964.

Almost surely, 2^263264920 is an apocalyptic number.

263264920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263264920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304722000).

263264920 is an abundant number, since it is smaller than the sum of its proper divisors (346179080).

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

263264920 is a wasteful number, since it uses less digits than its factorization.

263264920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 263264920 is about 16225.4405179027. The cubic root of 263264920 is about 640.9109099210.

The spelling of 263264920 in words is "two hundred sixty-three million, two hundred sixty-four thousand, nine hundred twenty".