250990740 has 432 divisors, whose sum is σ = 1045699200. Its totient is φ = 47900160.

The previous prime is 250990739. The next prime is 250990793. The reversal of 250990740 is 47099052.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 250990695 and 250990704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1261161 + ... + 1261359.

It is an arithmetic number, because the mean of its divisors is an integer number (2420600).

Almost surely, 2^250990740 is an apocalyptic number.

250990740 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 250990740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522849600).

250990740 is an abundant number, since it is smaller than the sum of its proper divisors (794708460).

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

250990740 is a wasteful number, since it uses less digits than its factorization.

250990740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 250990740 is about 15842.6872720508. The cubic root of 250990740 is about 630.7915975305.

The spelling of 250990740 in words is "two hundred fifty million, nine hundred ninety thousand, seven hundred forty".