20426412 has 24 divisors (see below), whose sum is σ = 48562416. Its totient is φ = 6680128.

The previous prime is 20426389. The next prime is 20426423. The reversal of 20426412 is 21462402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15423 + ... + 16694.

It is an arithmetic number, because the mean of its divisors is an integer number (2023434).

Almost surely, 2^20426412 is an apocalyptic number.

It is an amenable number.

20426412 is an abundant number, since it is smaller than the sum of its proper divisors (28136004).

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

20426412 is a wasteful number, since it uses less digits than its factorization.

20426412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32177 (or 32175 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 20426412 is about 4519.5588280274. The cubic root of 20426412 is about 273.3573123256.

Adding to 20426412 its reverse (21462402), we get a palindrome (41888814).

The spelling of 20426412 in words is "twenty million, four hundred twenty-six thousand, four hundred twelve".