19880880 has 40 divisors (see below), whose sum is σ = 61631472. Its totient is φ = 5301504.

The previous prime is 19880879. The next prime is 19880911. The reversal of 19880880 is 8808891.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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, 41179 + ... + 41658.

Almost surely, 2^19880880 is an apocalyptic number.

19880880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19880880 is an abundant number, since it is smaller than the sum of its proper divisors (41750592).

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

19880880 is a wasteful number, since it uses less digits than its factorization.

19880880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82853 (or 82847 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 42.

The square root of 19880880 is about 4458.7980443164. The cubic root of 19880880 is about 270.9017858269.

The spelling of 19880880 in words is "nineteen million, eight hundred eighty thousand, eight hundred eighty".