256949964 has 36 divisors (see below), whose sum is σ = 650049400. Its totient is φ = 85579200.

The previous prime is 256949963. The next prime is 256950007. The reversal of 256949964 is 469949652.

It is a happy number.

256949964 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 256949964.

It is not an unprimeable number, because it can be changed into a prime (256949963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59064 + ... + 63264.

Almost surely, 2^256949964 is an apocalyptic number.

It is an amenable number.

256949964 is an abundant number, since it is smaller than the sum of its proper divisors (393099436).

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

256949964 is a wasteful number, since it uses less digits than its factorization.

256949964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5910 (or 5905 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 256949964 is about 16029.6588859526. The cubic root of 256949964 is about 635.7448543431.

The spelling of 256949964 in words is "two hundred fifty-six million, nine hundred forty-nine thousand, nine hundred sixty-four".