20516332 has 24 divisors (see below), whose sum is σ = 37133712. Its totient is φ = 9912000.

The previous prime is 20516323. The next prime is 20516341. The reversal of 20516332 is 23361502.

It is an interprime number because it is at equal distance from previous prime (20516323) and next prime (20516341).

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

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, 16782 + ... + 17962.

It is an arithmetic number, because the mean of its divisors is an integer number (1547238).

Almost surely, 2^20516332 is an apocalyptic number.

It is an amenable number.

20516332 is a deficient number, since it is larger than the sum of its proper divisors (16617380).

20516332 is a wasteful number, since it uses less digits than its factorization.

20516332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329 (or 1327 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 20516332 is about 4529.4957776777. The cubic root of 20516332 is about 273.7578445519.

Adding to 20516332 its reverse (23361502), we get a palindrome (43877834).

The spelling of 20516332 in words is "twenty million, five hundred sixteen thousand, three hundred thirty-two".