20426562 has 24 divisors (see below), whose sum is σ = 47662524. Its totient is φ = 6285024.

The previous prime is 20426561. The next prime is 20426573. The reversal of 20426562 is 26562402.

20426562 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 656 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20331081 + 95481 = 4509^2 + 309^2 .

It is not an unprimeable number, because it can be changed into a prime (20426561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43413 + ... + 43880.

Almost surely, 2^20426562 is an apocalyptic number.

20426562 is an abundant number, since it is smaller than the sum of its proper divisors (27235962).

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

20426562 is a wasteful number, since it uses less digits than its factorization.

20426562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87314 (or 87311 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 20426562 is about 4519.5754225369. The cubic root of 20426562 is about 273.3579814510.

Adding to 20426562 its reverse (26562402), we get a palindrome (46988964).

The spelling of 20426562 in words is "twenty million, four hundred twenty-six thousand, five hundred sixty-two".