250890040 has 32 divisors (see below), whose sum is σ = 566455680. Its totient is φ = 100008832.

The previous prime is 250890019. The next prime is 250890043. The reversal of 250890040 is 40098052.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 250889990 and 250890008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250890043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017 + ... + 22423.

It is an arithmetic number, because the mean of its divisors is an integer number (17701740).

Almost surely, 2^250890040 is an apocalyptic number.

250890040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250890040 is an abundant number, since it is smaller than the sum of its proper divisors (315565640).

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

250890040 is a wasteful number, since it uses less digits than its factorization.

250890040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21711 (or 21707 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 250890040 is about 15839.5088307687. The cubic root of 250890040 is about 630.7072262760.

The spelling of 250890040 in words is "two hundred fifty million, eight hundred ninety thousand, forty".