20918482 has 24 divisors (see below), whose sum is σ = 34257600. Its totient is φ = 9575280.

The previous prime is 20918479. The next prime is 20918497. The reversal of 20918482 is 28481902.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 13.

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 11 ways as a sum of consecutive naturals, for example, 67107 + ... + 67417.

It is an arithmetic number, because the mean of its divisors is an integer number (1427400).

Almost surely, 2^20918482 is an apocalyptic number.

20918482 is a deficient number, since it is larger than the sum of its proper divisors (13339118).

20918482 is a wasteful number, since it uses less digits than its factorization.

20918482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 20918482 is about 4573.6727036376. The cubic root of 20918482 is about 275.5349674491.

The spelling of 20918482 in words is "twenty million, nine hundred eighteen thousand, four hundred eighty-two".