20102888 has 24 divisors (see below), whose sum is σ = 40818150. Its totient is φ = 9277632.

The previous prime is 20102861. The next prime is 20102899. The reversal of 20102888 is 88820102.

It can be written as a sum of positive squares in 3 ways, for example, as 7300804 + 12802084 = 2702^2 + 3578^2 .

It is a super-2 number, since 2×20102888² = 808252211881088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20102888.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6083 + ... + 8786.

Almost surely, 2^20102888 is an apocalyptic number.

It is an amenable number.

20102888 is an abundant number, since it is smaller than the sum of its proper divisors (20715262).

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

20102888 is a wasteful number, since it uses less digits than its factorization.

20102888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14901 (or 14884 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 20102888 is about 4483.6244267334. The cubic root of 20102888 is about 271.9064340807.

The spelling of 20102888 in words is "twenty million, one hundred two thousand, eight hundred eighty-eight".