19880895 has 16 divisors (see below), whose sum is σ = 31887360. Its totient is φ = 10577184.

The previous prime is 19880879. The next prime is 19880911. The reversal of 19880895 is 59808891.

It is an interprime number because it is at equal distance from previous prime (19880879) and next prime (19880911).

It is not a de Polignac number, because 19880895 - 2⁴ = 19880879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5802 + ... + 8568.

It is an arithmetic number, because the mean of its divisors is an integer number (1992960).

Almost surely, 2^19880895 is an apocalyptic number.

19880895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19880895 is a deficient number, since it is larger than the sum of its proper divisors (12006465).

19880895 is a wasteful number, since it uses less digits than its factorization.

19880895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254.

The product of its (nonzero) digits is 207360, while the sum is 48.

The square root of 19880895 is about 4458.7997263838. The cubic root of 19880895 is about 270.9018539581.

The spelling of 19880895 in words is "nineteen million, eight hundred eighty thousand, eight hundred ninety-five".