20120008 has 32 divisors (see below), whose sum is σ = 39186360. Its totient is φ = 9676800.

The previous prime is 20119991. The next prime is 20120029. The reversal of 20120008 is 80002102.

It can be written as a sum of positive squares in 4 ways, for example, as 20088324 + 31684 = 4482^2 + 178^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20120008.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29560 + ... + 30232.

Almost surely, 2^20120008 is an apocalyptic number.

It is an amenable number.

20120008 is a deficient number, since it is larger than the sum of its proper divisors (19066352).

20120008 is a wasteful number, since it uses less digits than its factorization.

20120008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 20120008 is about 4485.5331901570. The cubic root of 20120008 is about 271.9835990688.

The spelling of 20120008 in words is "twenty million, one hundred twenty thousand, eight".