250172720 has 80 divisors (see below), whose sum is σ = 677367360. Its totient is φ = 84145152.

The previous prime is 250172717. The next prime is 250172761. The reversal of 250172720 is 27271052.

250172720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 250172720.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25466 + ... + 33894.

It is an arithmetic number, because the mean of its divisors is an integer number (8467092).

Almost surely, 2^250172720 is an apocalyptic number.

250172720 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 250172720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338683680).

250172720 is an abundant number, since it is smaller than the sum of its proper divisors (427194640).

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

250172720 is a wasteful number, since it uses less digits than its factorization.

250172720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8502 (or 8496 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 250172720 is about 15816.8492437653. The cubic root of 250172720 is about 630.1055672594.

The spelling of 250172720 in words is "two hundred fifty million, one hundred seventy-two thousand, seven hundred twenty".