19874904 has 64 divisors (see below), whose sum is σ = 60134400. Its totient is φ = 5343744.

The previous prime is 19874891. The next prime is 19874963. The reversal of 19874904 is 40947891.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624 + ... + 6335.

It is an arithmetic number, because the mean of its divisors is an integer number (939600).

Almost surely, 2^19874904 is an apocalyptic number.

19874904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19874904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30067200).

19874904 is an abundant number, since it is smaller than the sum of its proper divisors (40259496).

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

19874904 is a wasteful number, since it uses less digits than its factorization.

19874904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6992 (or 6988 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 19874904 is about 4458.1278581934. The cubic root of 19874904 is about 270.8746396222.

The spelling of 19874904 in words is "nineteen million, eight hundred seventy-four thousand, nine hundred four".