20812002 has 8 divisors (see below), whose sum is σ = 41624016. Its totient is φ = 6937332.

The previous prime is 20811983. The next prime is 20812013. The reversal of 20812002 is 20021802.

It is a sphenic number, since it is the product of 3 distinct primes.

20812002 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1734328 + ... + 1734339.

It is an arithmetic number, because the mean of its divisors is an integer number (5203002).

Almost surely, 2^20812002 is an apocalyptic number.

20812002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20812002 is a wasteful number, since it uses less digits than its factorization.

20812002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3468672.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 20812002 is about 4562.0173169334. The cubic root of 20812002 is about 275.0666593227.

Adding to 20812002 its reverse (20021802), we get a palindrome (40833804).

The spelling of 20812002 in words is "twenty million, eight hundred twelve thousand, two".