20256002 has 12 divisors (see below), whose sum is σ = 32901570. Its totient is φ = 9348768.

The previous prime is 20255999. The next prime is 20256029. The reversal of 20256002 is 20065202.

It can be written as a sum of positive squares in 3 ways, for example, as 5193841 + 15062161 = 2279^2 + 3881^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29627 + ... + 30302.

Almost surely, 2^20256002 is an apocalyptic number.

20256002 is a deficient number, since it is larger than the sum of its proper divisors (12645568).

20256002 is a wasteful number, since it uses less digits than its factorization.

20256002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59957 (or 59944 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20256002 is about 4500.6668394806. Note that the first 3 decimals coincide. The cubic root of 20256002 is about 272.5950155432.

The spelling of 20256002 in words is "twenty million, two hundred fifty-six thousand, two".