19874124 has 18 divisors (see below), whose sum is σ = 50237460. Its totient is φ = 6624696.

The previous prime is 19874117. The next prime is 19874137. The reversal of 19874124 is 42147891.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 552059 = 19874124 / (1 + 9 + 8 + 7 + 4 + 1 + 2 + 4).

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 5 ways as a sum of consecutive naturals, for example, 275994 + ... + 276065.

It is an arithmetic number, because the mean of its divisors is an integer number (2790970).

Almost surely, 2^19874124 is an apocalyptic number.

It is an amenable number.

19874124 is an abundant number, since it is smaller than the sum of its proper divisors (30363336).

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

19874124 is a wasteful number, since it uses less digits than its factorization.

19874124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552069 (or 552064 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 19874124 is about 4458.0403766678. The cubic root of 19874124 is about 270.8710960415.

It can be divided in two parts, 198741 and 24, that added together give a triangular number (198765 = T₆₃₀).

The spelling of 19874124 in words is "nineteen million, eight hundred seventy-four thousand, one hundred twenty-four".