20512026 has 12 divisors (see below), whose sum is σ = 44442762. Its totient is φ = 6837336.

The previous prime is 20511977. The next prime is 20512031. The reversal of 20512026 is 62021502.

It can be written as a sum of positive squares in only one way, i.e., 18481401 + 2030625 = 4299^2 + 1425^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1139557 = 20512026 / (2 + 0 + 5 + 1 + 2 + 0 + 2 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 569761 + ... + 569796.

Almost surely, 2^20512026 is an apocalyptic number.

20512026 is an abundant number, since it is smaller than the sum of its proper divisors (23930736).

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

20512026 is a wasteful number, since it uses less digits than its factorization.

20512026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139565 (or 1139562 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20512026 is about 4529.0204238886. The cubic root of 20512026 is about 273.7386909696.

Adding to 20512026 its reverse (62021502), we get a palindrome (82533528).

The spelling of 20512026 in words is "twenty million, five hundred twelve thousand, twenty-six".