19880974 has 8 divisors (see below), whose sum is σ = 29871648. Its totient is φ = 9923760.

The previous prime is 19880963. The next prime is 19880981. The reversal of 19880974 is 47908891.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6822 + ... + 9289.

It is an arithmetic number, because the mean of its divisors is an integer number (3733956).

Almost surely, 2^19880974 is an apocalyptic number.

19880974 is a deficient number, since it is larger than the sum of its proper divisors (9990674).

19880974 is a wasteful number, since it uses less digits than its factorization.

19880974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16730.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 19880974 is about 4458.8085852613. The cubic root of 19880974 is about 270.9022127819.

The spelling of 19880974 in words is "nineteen million, eight hundred eighty thousand, nine hundred seventy-four".