20252426 has 4 divisors (see below), whose sum is σ = 30378642. Its totient is φ = 10126212.

The previous prime is 20252381. The next prime is 20252447. The reversal of 20252426 is 62425202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10336225 + 9916201 = 3215^2 + 3149^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5063105 + ... + 5063108.

Almost surely, 2^20252426 is an apocalyptic number.

20252426 is a deficient number, since it is larger than the sum of its proper divisors (10126216).

20252426 is a wasteful number, since it uses less digits than its factorization.

20252426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10126215.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20252426 is about 4500.2695474827. The cubic root of 20252426 is about 272.5789732669.

Adding to 20252426 its reverse (62425202), we get a palindrome (82677628).

The spelling of 20252426 in words is "twenty million, two hundred fifty-two thousand, four hundred twenty-six".