256023622 has 4 divisors (see below), whose sum is σ = 384035436. Its totient is φ = 128011810.

The previous prime is 256023619. The next prime is 256023641. The reversal of 256023622 is 226320652.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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, 64005904 + ... + 64005907.

It is an arithmetic number, because the mean of its divisors is an integer number (96008859).

Almost surely, 2^256023622 is an apocalyptic number.

256023622 is a deficient number, since it is larger than the sum of its proper divisors (128011814).

256023622 is a wasteful number, since it uses less digits than its factorization.

256023622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128011813.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 256023622 is about 16000.7381704720. The cubic root of 256023622 is about 634.9799501802.

The spelling of 256023622 in words is "two hundred fifty-six million, twenty-three thousand, six hundred twenty-two".