20212426 has 32 divisors (see below), whose sum is σ = 34066368. Its totient is φ = 8933760.

The previous prime is 20212421. The next prime is 20212453. The reversal of 20212426 is 62421202.

It is not an unprimeable number, because it can be changed into a prime (20212421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71281 + ... + 71563.

It is an arithmetic number, because the mean of its divisors is an integer number (1064574).

Almost surely, 2^20212426 is an apocalyptic number.

20212426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20212426 is a deficient number, since it is larger than the sum of its proper divisors (13853942).

20212426 is a wasteful number, since it uses less digits than its factorization.

20212426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20212426 is about 4495.8231726793. The cubic root of 20212426 is about 272.3994006239.

Adding to 20212426 its reverse (62421202), we get a palindrome (82633628).

The spelling of 20212426 in words is "twenty million, two hundred twelve thousand, four hundred twenty-six".