250946640 has 240 divisors, whose sum is σ = 1005917760. Its totient is φ = 57335040.

The previous prime is 250946627. The next prime is 250946651. The reversal of 250946640 is 46649052.

250946640 is a `hidden beast` number, since 2 + 5 + 0 + 9 + 4 + 6 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×250946640² = 125948432254579200, which contains 22 as substring.

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 = 250946595 and 250946604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 104655 + ... + 107025.

It is an arithmetic number, because the mean of its divisors is an integer number (4191324).

Almost surely, 2^250946640 is an apocalyptic number.

250946640 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 250946640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502958880).

250946640 is an abundant number, since it is smaller than the sum of its proper divisors (754971120).

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

250946640 is a wasteful number, since it uses less digits than its factorization.

250946640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407 (or 2388 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 250946640 is about 15841.2954015762. The cubic root of 250946640 is about 630.7546512288.

The spelling of 250946640 in words is "two hundred fifty million, nine hundred forty-six thousand, six hundred forty".