20552288 has 24 divisors (see below), whose sum is σ = 40869360. Its totient is φ = 10172800.

The previous prime is 20552249. The next prime is 20552291. The reversal of 20552288 is 88225502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 53 + ... + 6411.

It is an arithmetic number, because the mean of its divisors is an integer number (1702890).

Almost surely, 2^20552288 is an apocalyptic number.

It is an amenable number.

20552288 is a deficient number, since it is larger than the sum of its proper divisors (20317072).

20552288 is a wasteful number, since it uses less digits than its factorization.

20552288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470 (or 6462 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 20552288 is about 4533.4631353966. The cubic root of 20552288 is about 273.9176764422.

The spelling of 20552288 in words is "twenty million, five hundred fifty-two thousand, two hundred eighty-eight".