256212462 has 16 divisors (see below), whose sum is σ = 559009152. Its totient is φ = 77640120.

The previous prime is 256212461. The next prime is 256212469. The reversal of 256212462 is 264212652.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256212461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1940938 + ... + 1941069.

It is an arithmetic number, because the mean of its divisors is an integer number (34938072).

Almost surely, 2^256212462 is an apocalyptic number.

256212462 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

256212462 is an abundant number, since it is smaller than the sum of its proper divisors (302796690).

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

256212462 is a wasteful number, since it uses less digits than its factorization.

256212462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3882023.

The product of its digits is 11520, while the sum is 30.

The square root of 256212462 is about 16006.6380605048. The cubic root of 256212462 is about 635.1360297164.

The spelling of 256212462 in words is "two hundred fifty-six million, two hundred twelve thousand, four hundred sixty-two".