256918452 has 48 divisors (see below), whose sum is σ = 707223552. Its totient is φ = 71036640.

The previous prime is 256918451. The next prime is 256918477. The reversal of 256918452 is 254819652.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256918451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46728 + ... + 51935.

It is an arithmetic number, because the mean of its divisors is an integer number (14733824).

Almost surely, 2^256918452 is an apocalyptic number.

It is an amenable number.

256918452 is an abundant number, since it is smaller than the sum of its proper divisors (450305100).

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

256918452 is a wasteful number, since it uses less digits than its factorization.

256918452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98708 (or 98706 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 256918452 is about 16028.6759278488. The cubic root of 256918452 is about 635.7188643144.

It can be divided in two parts, 25691 and 8452, that added together give a palindrome (34143).

The spelling of 256918452 in words is "two hundred fifty-six million, nine hundred eighteen thousand, four hundred fifty-two".