20056546 has 4 divisors (see below), whose sum is σ = 30084822. Its totient is φ = 10028272.

The previous prime is 20056523. The next prime is 20056559. The reversal of 20056546 is 64565002.

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., 19900521 + 156025 = 4461^2 + 395^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5014135 + ... + 5014138.

Almost surely, 2^20056546 is an apocalyptic number.

20056546 is a deficient number, since it is larger than the sum of its proper divisors (10028276).

20056546 is a wasteful number, since it uses less digits than its factorization.

20056546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10028275.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 20056546 is about 4478.4535277258. The cubic root of 20056546 is about 271.6973367124.

It can be divided in two parts, 20056 and 546, that added together give a palindrome (20602).

The spelling of 20056546 in words is "twenty million, fifty-six thousand, five hundred forty-six".