20612056 has 8 divisors (see below), whose sum is σ = 38647620. Its totient is φ = 10306024.

The previous prime is 20612027. The next prime is 20612089. The reversal of 20612056 is 65021602.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1288246 + ... + 1288261.

Almost surely, 2^20612056 is an apocalyptic number.

It is an amenable number.

20612056 is a deficient number, since it is larger than the sum of its proper divisors (18035564).

20612056 is a wasteful number, since it uses less digits than its factorization.

20612056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576513 (or 2576509 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20612056 is about 4540.0502199866. The cubic root of 20612056 is about 274.1829456474.

Adding to 20612056 its reverse (65021602), we get a palindrome (85633658).

The spelling of 20612056 in words is "twenty million, six hundred twelve thousand, fifty-six".