20262870 has 24 divisors (see below), whose sum is σ = 52683696. Its totient is φ = 5403408.

The previous prime is 20262863. The next prime is 20262883. The reversal of 20262870 is 7826202.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112482 + ... + 112661.

It is an arithmetic number, because the mean of its divisors is an integer number (2195154).

Almost surely, 2^20262870 is an apocalyptic number.

20262870 is an abundant number, since it is smaller than the sum of its proper divisors (32420826).

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

20262870 is a wasteful number, since it uses less digits than its factorization.

20262870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225156 (or 225153 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20262870 is about 4501.4297728611. The cubic root of 20262870 is about 272.6258207503.

The spelling of 20262870 in words is "twenty million, two hundred sixty-two thousand, eight hundred seventy".