256192980 has 24 divisors (see below), whose sum is σ = 717340512. Its totient is φ = 68318112.

The previous prime is 256192949. The next prime is 256192987. The reversal of 256192980 is 89291652.

256192980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256192987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2134882 + ... + 2135001.

It is an arithmetic number, because the mean of its divisors is an integer number (29889188).

Almost surely, 2^256192980 is an apocalyptic number.

256192980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256192980 is an abundant number, since it is smaller than the sum of its proper divisors (461147532).

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

256192980 is a wasteful number, since it uses less digits than its factorization.

256192980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4269895 (or 4269893 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 256192980 is about 16006.0294889145. The cubic root of 256192980 is about 635.1199310540.

The spelling of 256192980 in words is "two hundred fifty-six million, one hundred ninety-two thousand, nine hundred eighty".