20912426 has 16 divisors (see below), whose sum is σ = 33134400. Its totient is φ = 9871488.

The previous prime is 20912417. The next prime is 20912453. The reversal of 20912426 is 62421902.

It is a super-2 number, since 2×20912426² = 874659122410952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20912395 and 20912404.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12635 + ... + 14193.

It is an arithmetic number, because the mean of its divisors is an integer number (2070900).

Almost surely, 2^20912426 is an apocalyptic number.

20912426 is a deficient number, since it is larger than the sum of its proper divisors (12221974).

20912426 is a wasteful number, since it uses less digits than its factorization.

20912426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20912426 is about 4573.0106057170. The cubic root of 20912426 is about 275.5083753217.

The spelling of 20912426 in words is "twenty million, nine hundred twelve thousand, four hundred twenty-six".