18876620 has 48 divisors (see below), whose sum is σ = 45756480. Its totient is φ = 6407424.

The previous prime is 18876589. The next prime is 18876631. The reversal of 18876620 is 2667881.

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 15 ways as a sum of consecutive naturals, for example, 14642 + ... + 15878.

It is an arithmetic number, because the mean of its divisors is an integer number (953260).

Almost surely, 2^18876620 is an apocalyptic number.

18876620 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 18876620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22878240).

18876620 is an abundant number, since it is smaller than the sum of its proper divisors (26879860).

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

18876620 is a wasteful number, since it uses less digits than its factorization.

18876620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362 (or 1360 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 18876620 is about 4344.7232362948. The cubic root of 18876620 is about 266.2613181873.

The spelling of 18876620 in words is "eighteen million, eight hundred seventy-six thousand, six hundred twenty".