20959408 has 10 divisors (see below), whose sum is σ = 40608884. Its totient is φ = 10479696.

The previous prime is 20959403. The next prime is 20959429. The reversal of 20959408 is 80495902.

It is not an unprimeable number, because it can be changed into a prime (20959403) by changing a digit.

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 as a sum of consecutive naturals, namely, 654966 + ... + 654997.

Almost surely, 2^20959408 is an apocalyptic number.

It is an amenable number.

20959408 is a deficient number, since it is larger than the sum of its proper divisors (19649476).

20959408 is a wasteful number, since it uses less digits than its factorization.

20959408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309971 (or 1309965 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 20959408 is about 4578.1446023471. The cubic root of 20959408 is about 275.7145406777.

The spelling of 20959408 in words is "twenty million, nine hundred fifty-nine thousand, four hundred eight".