20926250 has 20 divisors (see below), whose sum is σ = 39226506. Its totient is φ = 8370000.

The previous prime is 20926237. The next prime is 20926259. The reversal of 20926250 is 5262902.

It can be written as a sum of positive squares in 5 ways, for example, as 3545689 + 17380561 = 1883^2 + 4169^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20926259) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7121 + ... + 9620.

Almost surely, 2^20926250 is an apocalyptic number.

20926250 is a deficient number, since it is larger than the sum of its proper divisors (18300256).

20926250 is an equidigital number, since it uses as much as digits as its factorization.

20926250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16763 (or 16748 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 20926250 is about 4574.5218329351. The cubic root of 20926250 is about 275.5690695212.

The spelling of 20926250 in words is "twenty million, nine hundred twenty-six thousand, two hundred fifty".