20933008 has 10 divisors (see below), whose sum is σ = 40557734. Its totient is φ = 10466496.

The previous prime is 20932997. The next prime is 20933021. The reversal of 20933008 is 80033902.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18766224 + 2166784 = 4332^2 + 1472^2 .

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 as a sum of consecutive naturals, namely, 654141 + ... + 654172.

Almost surely, 2^20933008 is an apocalyptic number.

It is an amenable number.

20933008 is a deficient number, since it is larger than the sum of its proper divisors (19624726).

20933008 is a wasteful number, since it uses less digits than its factorization.

20933008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308321 (or 1308315 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20933008 is about 4575.2604297460. The cubic root of 20933008 is about 275.5987307574.

The spelling of 20933008 in words is "twenty million, nine hundred thirty-three thousand, eight".