256122300 has 72 divisors (see below), whose sum is σ = 846918016. Its totient is φ = 58541760.

The previous prime is 256122283. The next prime is 256122311. The reversal of 256122300 is 3221652.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58882 + ... + 63081.

Almost surely, 2^256122300 is an apocalyptic number.

256122300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256122300 is an abundant number, since it is smaller than the sum of its proper divisors (590795716).

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

256122300 is a wasteful number, since it uses less digits than its factorization.

256122300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121987 (or 121980 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 256122300 is about 16003.8214186487. The cubic root of 256122300 is about 635.0615188296.

Adding to 256122300 its reverse (3221652), we get a palindrome (259343952).

The spelling of 256122300 in words is "two hundred fifty-six million, one hundred twenty-two thousand, three hundred".