20333880 has 96 divisors (see below), whose sum is σ = 75535200. Its totient is φ = 4647168.

The previous prime is 20333867. The next prime is 20333891. The reversal of 20333880 is 8833302.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1515 + ... + 6554.

It is an arithmetic number, because the mean of its divisors is an integer number (786825).

Almost surely, 2^20333880 is an apocalyptic number.

20333880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20333880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37767600).

20333880 is an abundant number, since it is smaller than the sum of its proper divisors (55201320).

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

20333880 is a wasteful number, since it uses less digits than its factorization.

20333880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8093 (or 8086 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20333880 is about 4509.3103685597. The cubic root of 20333880 is about 272.9439163463.

The spelling of 20333880 in words is "twenty million, three hundred thirty-three thousand, eight hundred eighty".