256542322 has 32 divisors (see below), whose sum is σ = 409328640. Its totient is φ = 120341760.

The previous prime is 256542317. The next prime is 256542337. The reversal of 256542322 is 223245652.

256542322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 912822 + ... + 913102.

It is an arithmetic number, because the mean of its divisors is an integer number (12791520).

Almost surely, 2^256542322 is an apocalyptic number.

256542322 is a deficient number, since it is larger than the sum of its proper divisors (152786318).

256542322 is a wasteful number, since it uses less digits than its factorization.

256542322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618.

The product of its digits is 28800, while the sum is 31.

The square root of 256542322 is about 16016.9385963735. The cubic root of 256542322 is about 635.4084808482.

Adding to 256542322 its reverse (223245652), we get a palindrome (479787974).

The spelling of 256542322 in words is "two hundred fifty-six million, five hundred forty-two thousand, three hundred twenty-two".