20427850 has 24 divisors (see below), whose sum is σ = 39997440. Its totient is φ = 7740720.

The previous prime is 20427833. The next prime is 20427859. The reversal of 20427850 is 5872402.

It is a hoax number, since the sum of its digits (28) 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 (20427859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9802 + ... + 11701.

It is an arithmetic number, because the mean of its divisors is an integer number (1666560).

Almost surely, 2^20427850 is an apocalyptic number.

20427850 is a deficient number, since it is larger than the sum of its proper divisors (19569590).

20427850 is a wasteful number, since it uses less digits than its factorization.

20427850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21534 (or 21529 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 20427850 is about 4519.7179115516. The cubic root of 20427850 is about 273.3637268734.

The spelling of 20427850 in words is "twenty million, four hundred twenty-seven thousand, eight hundred fifty".