20256102 has 16 divisors (see below), whose sum is σ = 45013680. Its totient is φ = 6752016.

The previous prime is 20256073. The next prime is 20256127. The reversal of 20256102 is 20165202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187503 + ... + 187610.

It is an arithmetic number, because the mean of its divisors is an integer number (2813355).

Almost surely, 2^20256102 is an apocalyptic number.

20256102 is an abundant number, since it is smaller than the sum of its proper divisors (24757578).

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

20256102 is a wasteful number, since it uses less digits than its factorization.

20256102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375124 (or 375118 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20256102 is about 4500.6779489317. The cubic root of 20256102 is about 272.5954641256.

The spelling of 20256102 in words is "twenty million, two hundred fifty-six thousand, one hundred two".