20559312 has 40 divisors (see below), whose sum is σ = 59014080. Its totient is φ = 6852960.

The previous prime is 20559269. The next prime is 20559361. The reversal of 20559312 is 21395502.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23364 + ... + 24227.

It is an arithmetic number, because the mean of its divisors is an integer number (1475352).

Almost surely, 2^20559312 is an apocalyptic number.

It is an amenable number.

20559312 is an abundant number, since it is smaller than the sum of its proper divisors (38454768).

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

20559312 is a wasteful number, since it uses less digits than its factorization.

20559312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47608 (or 47596 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 20559312 is about 4534.2377529194. The cubic root of 20559312 is about 273.9488778121.

The spelling of 20559312 in words is "twenty million, five hundred fifty-nine thousand, three hundred twelve".