19880634 has 8 divisors (see below), whose sum is σ = 39761280. Its totient is φ = 6626876.

The previous prime is 19880629. The next prime is 19880647. The reversal of 19880634 is 43608891.

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

19880634 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 19880592 and 19880601.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1656714 + ... + 1656725.

It is an arithmetic number, because the mean of its divisors is an integer number (4970160).

Almost surely, 2^19880634 is an apocalyptic number.

19880634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19880634 is a wasteful number, since it uses less digits than its factorization.

19880634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313444.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 19880634 is about 4458.7704583214. The cubic root of 19880634 is about 270.9006684700.

The spelling of 19880634 in words is "nineteen million, eight hundred eighty thousand, six hundred thirty-four".