20200456 has 8 divisors (see below), whose sum is σ = 37875870. Its totient is φ = 10100224.

The previous prime is 20200441. The next prime is 20200511. The reversal of 20200456 is 65400202.

It can be written as a sum of positive squares in only one way, i.e., 13616100 + 6584356 = 3690^2 + 2566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262521 + ... + 1262536.

Almost surely, 2^20200456 is an apocalyptic number.

It is an amenable number.

20200456 is a deficient number, since it is larger than the sum of its proper divisors (17675414).

20200456 is a wasteful number, since it uses less digits than its factorization.

20200456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525063 (or 2525059 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20200456 is about 4494.4917398967. The cubic root of 20200456 is about 272.3456174594.

Adding to 20200456 its reverse (65400202), we get a palindrome (85600658).

The spelling of 20200456 in words is "twenty million, two hundred thousand, four hundred fifty-six".