249867020 has 48 divisors (see below), whose sum is σ = 598334688. Its totient is φ = 86830080.

The previous prime is 249867011. The next prime is 249867047. The reversal of 249867020 is 20768942.

249867020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 23846 + ... + 32685.

It is an arithmetic number, because the mean of its divisors is an integer number (12465306).

Almost surely, 2^249867020 is an apocalyptic number.

249867020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249867020 is an abundant number, since it is smaller than the sum of its proper divisors (348467668).

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

249867020 is a wasteful number, since it uses less digits than its factorization.

249867020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56570 (or 56568 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 249867020 is about 15807.1825446536. The cubic root of 249867020 is about 629.8488089363.

The spelling of 249867020 in words is "two hundred forty-nine million, eight hundred sixty-seven thousand, twenty".