20655332 has 12 divisors (see below), whose sum is σ = 36739836. Its totient is φ = 10158240.

The previous prime is 20655329. The next prime is 20655367. The reversal of 20655332 is 23355602.

It can be written as a sum of positive squares in 2 ways, for example, as 817216 + 19838116 = 904^2 + 4454^2 .

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 3 ways as a sum of consecutive naturals, for example, 42083 + ... + 42570.

It is an arithmetic number, because the mean of its divisors is an integer number (3061653).

Almost surely, 2^20655332 is an apocalyptic number.

It is an amenable number.

20655332 is a deficient number, since it is larger than the sum of its proper divisors (16084504).

20655332 is a wasteful number, since it uses less digits than its factorization.

20655332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84718 (or 84716 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 20655332 is about 4544.8137475589. The cubic root of 20655332 is about 274.3746982595.

The spelling of 20655332 in words is "twenty million, six hundred fifty-five thousand, three hundred thirty-two".