256461428 has 12 divisors (see below), whose sum is σ = 451402980. Its totient is φ = 127489152.

The previous prime is 256461383. The next prime is 256461433. The reversal of 256461428 is 824164652.

256461428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 230675344 + 25786084 = 15188^2 + 5078^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 256461391 and 256461400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184613 + ... + 185996.

It is an arithmetic number, because the mean of its divisors is an integer number (37616915).

Almost surely, 2^256461428 is an apocalyptic number.

It is an amenable number.

256461428 is a deficient number, since it is larger than the sum of its proper divisors (194941552).

256461428 is a wasteful number, since it uses less digits than its factorization.

256461428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370786 (or 370784 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 256461428 is about 16014.4131331748. The cubic root of 256461428 is about 635.3416872722.

The spelling of 256461428 in words is "two hundred fifty-six million, four hundred sixty-one thousand, four hundred twenty-eight".