20124056 has 32 divisors (see below), whose sum is σ = 40519440. Its totient is φ = 9335808.

The previous prime is 20124031. The next prime is 20124079. The reversal of 20124056 is 65042102.

20124056 = 1080² + 1081² + ... + 1096².

It is a happy number.

It is a super-2 number, since 2×20124056² = 809955259782272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8915 + ... + 10941.

Almost surely, 2^20124056 is an apocalyptic number.

It is an amenable number.

20124056 is an abundant number, since it is smaller than the sum of its proper divisors (20395384).

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

20124056 is a wasteful number, since it uses less digits than its factorization.

20124056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123 (or 2119 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20124056 is about 4485.9843958712. The cubic root of 20124056 is about 272.0018382229.

Adding to 20124056 its reverse (65042102), we get a palindrome (85166158).

The spelling of 20124056 in words is "twenty million, one hundred twenty-four thousand, fifty-six".