18872124 has 12 divisors (see below), whose sum is σ = 44034984. Its totient is φ = 6290704.

The previous prime is 18872123. The next prime is 18872143. The reversal of 18872124 is 42127881.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18872123) 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 3 ways as a sum of consecutive naturals, for example, 786327 + ... + 786350.

It is an arithmetic number, because the mean of its divisors is an integer number (3669582).

Almost surely, 2^18872124 is an apocalyptic number.

It is an amenable number.

18872124 is an abundant number, since it is smaller than the sum of its proper divisors (25162860).

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

18872124 is a wasteful number, since it uses less digits than its factorization.

18872124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572684 (or 1572682 counting only the distinct ones).

The product of its digits is 7168, while the sum is 33.

The square root of 18872124 is about 4344.2057962302. The cubic root of 18872124 is about 266.2401772920.

The spelling of 18872124 in words is "eighteen million, eight hundred seventy-two thousand, one hundred twenty-four".