256919372 has 6 divisors (see below), whose sum is σ = 449608908. Its totient is φ = 128459684.

The previous prime is 256919371. The next prime is 256919423. The reversal of 256919372 is 273919652.

It is not an unprimeable number, because it can be changed into a prime (256919371) 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 as a sum of consecutive naturals, namely, 32114918 + ... + 32114925.

It is an arithmetic number, because the mean of its divisors is an integer number (74934818).

Almost surely, 2^256919372 is an apocalyptic number.

It is an amenable number.

256919372 is a deficient number, since it is larger than the sum of its proper divisors (192689536).

256919372 is a wasteful number, since it uses less digits than its factorization.

256919372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64229847 (or 64229845 counting only the distinct ones).

The product of its digits is 204120, while the sum is 44.

The square root of 256919372 is about 16028.7046263882. The cubic root of 256919372 is about 635.7196231293.

The spelling of 256919372 in words is "two hundred fifty-six million, nine hundred nineteen thousand, three hundred seventy-two".