18876240 has 120 divisors (see below), whose sum is σ = 65808288. Its totient is φ = 5028480.

The previous prime is 18876233. The next prime is 18876257. The reversal of 18876240 is 4267881.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 18876195 and 18876204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18955 + ... + 19925.

Almost surely, 2^18876240 is an apocalyptic number.

18876240 is a gapful number since it is divisible by the number (10) 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 18876240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32904144).

18876240 is an abundant number, since it is smaller than the sum of its proper divisors (46932048).

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

18876240 is an equidigital number, since it uses as much as digits as its factorization.

18876240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 18876240 is about 4344.6795048657. The cubic root of 18876240 is about 266.2595314977.

The spelling of 18876240 in words is "eighteen million, eight hundred seventy-six thousand, two hundred forty".