20553712 has 20 divisors (see below), whose sum is σ = 40499640. Its totient is φ = 10102208.

The previous prime is 20553707. The next prime is 20553727. The reversal of 20553712 is 21735502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9943 + ... + 11830.

It is an arithmetic number, because the mean of its divisors is an integer number (2024982).

Almost surely, 2^20553712 is an apocalyptic number.

It is an amenable number.

20553712 is a deficient number, since it is larger than the sum of its proper divisors (19945928).

20553712 is a wasteful number, since it uses less digits than its factorization.

20553712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21840 (or 21834 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 20553712 is about 4533.6201870029. The cubic root of 20553712 is about 273.9240025791.

The spelling of 20553712 in words is "twenty million, five hundred fifty-three thousand, seven hundred twelve".