250661940 has 48 divisors (see below), whose sum is σ = 743141952. Its totient is φ = 62910976.

The previous prime is 250661899. The next prime is 250661953. The reversal of 250661940 is 49166052.

250661940 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, 121854 + ... + 123893.

It is an arithmetic number, because the mean of its divisors is an integer number (15482124).

Almost surely, 2^250661940 is an apocalyptic number.

250661940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250661940 is an abundant number, since it is smaller than the sum of its proper divisors (492480012).

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

250661940 is a wasteful number, since it uses less digits than its factorization.

250661940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245776 (or 245774 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 250661940 is about 15832.3068439189. The cubic root of 250661940 is about 630.5160297143.

It can be divided in two parts, 2506 and 61940, that added together give a palindrome (64446).

The spelling of 250661940 in words is "two hundred fifty million, six hundred sixty-one thousand, nine hundred forty".