250803640 has 64 divisors (see below), whose sum is σ = 585768960. Its totient is φ = 96543360.

The previous prime is 250803617. The next prime is 250803643. The reversal of 250803640 is 46308052.

It is a junction number, because it is equal to n+sod(n) for n = 250803599 and 250803608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250803643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276067 + ... + 276973.

It is an arithmetic number, because the mean of its divisors is an integer number (9152640).

Almost surely, 2^250803640 is an apocalyptic number.

250803640 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 250803640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292884480).

250803640 is an abundant number, since it is smaller than the sum of its proper divisors (334965320).

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

250803640 is a wasteful number, since it uses less digits than its factorization.

250803640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1168 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 250803640 is about 15836.7812386230. The cubic root of 250803640 is about 630.6348182457.

The spelling of 250803640 in words is "two hundred fifty million, eight hundred three thousand, six hundred forty".