19880887 has 8 divisors (see below), whose sum is σ = 21507696. Its totient is φ = 18268032.

The previous prime is 19880879. The next prime is 19880911. The reversal of 19880887 is 78808891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19880887 - 2³ = 19880879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19880887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19880807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418 + ... + 6319.

It is an arithmetic number, because the mean of its divisors is an integer number (2688462).

Almost surely, 2^19880887 is an apocalyptic number.

19880887 is a deficient number, since it is larger than the sum of its proper divisors (1626809).

19880887 is a wasteful number, since it uses less digits than its factorization.

19880887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6977.

The product of its (nonzero) digits is 258048, while the sum is 49.

The square root of 19880887 is about 4458.7988292813. The cubic root of 19880887 is about 270.9018176214.

The spelling of 19880887 in words is "nineteen million, eight hundred eighty thousand, eight hundred eighty-seven".