18868460 has 48 divisors (see below), whose sum is σ = 44067072. Its totient is φ = 6739200.

The previous prime is 18868433. The next prime is 18868469. The reversal of 18868460 is 6486881.

It is not an unprimeable number, because it can be changed into a prime (18868469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6890 + ... + 9230.

It is an arithmetic number, because the mean of its divisors is an integer number (918064).

Almost surely, 2^18868460 is an apocalyptic number.

18868460 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 18868460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22033536).

18868460 is an abundant number, since it is smaller than the sum of its proper divisors (25198612).

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

18868460 is a wasteful number, since it uses less digits than its factorization.

18868460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394 (or 2392 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 18868460 is about 4343.7840646146. The cubic root of 18868460 is about 266.2229461075. Note that the first 3 decimals are identical.

The spelling of 18868460 in words is "eighteen million, eight hundred sixty-eight thousand, four hundred sixty".