20553248 has 24 divisors (see below), whose sum is σ = 41771520. Its totient is φ = 9944640.

The previous prime is 20553227. The next prime is 20553251. The reversal of 20553248 is 84235502.

It is a self number, because there is not a number n which added to its sum of digits gives 20553248.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9368 + ... + 11351.

It is an arithmetic number, because the mean of its divisors is an integer number (1740480).

Almost surely, 2^20553248 is an apocalyptic number.

It is an amenable number.

20553248 is an abundant number, since it is smaller than the sum of its proper divisors (21218272).

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

20553248 is a wasteful number, since it uses less digits than its factorization.

20553248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20760 (or 20752 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 20553248 is about 4533.5690134815. The cubic root of 20553248 is about 273.9219412857.

The spelling of 20553248 in words is "twenty million, five hundred fifty-three thousand, two hundred forty-eight".