20925850 has 24 divisors (see below), whose sum is σ = 42461568. Its totient is φ = 7609200.

The previous prime is 20925847. The next prime is 20925881. The reversal of 20925850 is 5852902.

It is a happy number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

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, 18474 + ... + 19573.

It is an arithmetic number, because the mean of its divisors is an integer number (1769232).

Almost surely, 2^20925850 is an apocalyptic number.

20925850 is an abundant number, since it is smaller than the sum of its proper divisors (21535718).

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

20925850 is a wasteful number, since it uses less digits than its factorization.

20925850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38070 (or 38065 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 20925850 is about 4574.4781123096. The cubic root of 20925850 is about 275.5673136988.

The spelling of 20925850 in words is "twenty million, nine hundred twenty-five thousand, eight hundred fifty".