250770978 has 160 divisors (see below), whose sum is σ = 643572864. Its totient is φ = 72534528.

The previous prime is 250770977. The next prime is 250770979. The reversal of 250770978 is 879077052.

250770978 is a `hidden beast` number, since 2 + 507 + 70 + 9 + 78 = 666.

It is an interprime number because it is at equal distance from previous prime (250770977) and next prime (250770979).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (250770977) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2343601 + ... + 2343707.

Almost surely, 2^250770978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250770978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321786432).

250770978 is an abundant number, since it is smaller than the sum of its proper divisors (392801886).

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

250770978 is a wasteful number, since it uses less digits than its factorization.

250770978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The square root of 250770978 is about 15835.7499980266. The cubic root of 250770978 is about 630.6074413322.

The spelling of 250770978 in words is "two hundred fifty million, seven hundred seventy thousand, nine hundred seventy-eight".