20329256 has 8 divisors (see below), whose sum is σ = 38117370. Its totient is φ = 10164624.

The previous prime is 20329247. The next prime is 20329277. The reversal of 20329256 is 65292302.

It can be written as a sum of positive squares in only one way, i.e., 17926756 + 2402500 = 4234^2 + 1550^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270571 + ... + 1270586.

Almost surely, 2^20329256 is an apocalyptic number.

It is an amenable number.

20329256 is a deficient number, since it is larger than the sum of its proper divisors (17788114).

20329256 is a wasteful number, since it uses less digits than its factorization.

20329256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541163 (or 2541159 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 20329256 is about 4508.7976224266. The cubic root of 20329256 is about 272.9232252903.

The spelling of 20329256 in words is "twenty million, three hundred twenty-nine thousand, two hundred fifty-six".