250389140 has 24 divisors (see below), whose sum is σ = 534439752. Its totient is φ = 98513280.

The previous prime is 250389137. The next prime is 250389151. The reversal of 250389140 is 41983052.

250389140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 559504 + 249829636 = 748^2 + 15806^2 .

It is a junction number, because it is equal to n+sod(n) for n = 250389097 and 250389106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101399 + ... + 103838.

It is an arithmetic number, because the mean of its divisors is an integer number (22268323).

Almost surely, 2^250389140 is an apocalyptic number.

250389140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250389140 is an abundant number, since it is smaller than the sum of its proper divisors (284050612).

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

250389140 is a wasteful number, since it uses less digits than its factorization.

250389140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205307 (or 205305 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 250389140 is about 15823.6892032168. The cubic root of 250389140 is about 630.2872126213.

The spelling of 250389140 in words is "two hundred fifty million, three hundred eighty-nine thousand, one hundred forty".