250706628 has 18 divisors (see below), whose sum is σ = 633730734. Its totient is φ = 83568864.

The previous prime is 250706627. The next prime is 250706639. The reversal of 250706628 is 826607052.

250706628 is a `hidden beast` number, since 25 + 0 + 7 + 0 + 6 + 628 = 666.

It can be written as a sum of positive squares in only one way, i.e., 244859904 + 5846724 = 15648^2 + 2418^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6964073 = 250706628 / (2 + 5 + 0 + 7 + 0 + 6 + 6 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 250706592 and 250706601.

It is not an unprimeable number, because it can be changed into a prime (250706627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3482001 + ... + 3482072.

It is an arithmetic number, because the mean of its divisors is an integer number (35207263).

Almost surely, 2^250706628 is an apocalyptic number.

It is an amenable number.

250706628 is an abundant number, since it is smaller than the sum of its proper divisors (383024106).

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

250706628 is a wasteful number, since it uses less digits than its factorization.

250706628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6964083 (or 6964078 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 250706628 is about 15833.7180725185. The cubic root of 250706628 is about 630.5534969448.

The spelling of 250706628 in words is "two hundred fifty million, seven hundred six thousand, six hundred twenty-eight".