20878088 has 32 divisors (see below), whose sum is σ = 48807360. Its totient is φ = 8134080.

The previous prime is 20878087. The next prime is 20878103. The reversal of 20878088 is 88087802.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20878087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16331 + ... + 17562.

It is an arithmetic number, because the mean of its divisors is an integer number (1525230).

Almost surely, 2^20878088 is an apocalyptic number.

20878088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20878088 is an abundant number, since it is smaller than the sum of its proper divisors (27929272).

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

20878088 is a wasteful number, since it uses less digits than its factorization.

20878088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33917 (or 33913 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 41.

The square root of 20878088 is about 4569.2546438123. The cubic root of 20878088 is about 275.3574986884.

The spelling of 20878088 in words is "twenty million, eight hundred seventy-eight thousand, eighty-eight".