18078060 has 288 divisors, whose sum is σ = 70785792. Its totient is φ = 3386880.

The previous prime is 18078043. The next prime is 18078061. The reversal of 18078060 is 6087081.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (18078061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 420399 + ... + 420441.

It is an arithmetic number, because the mean of its divisors is an integer number (245784).

Almost surely, 2^18078060 is an apocalyptic number.

18078060 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 18078060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35392896).

18078060 is an abundant number, since it is smaller than the sum of its proper divisors (52707732).

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

18078060 is a wasteful number, since it uses less digits than its factorization.

18078060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 18078060 is about 4251.8301941634. The cubic root of 18078060 is about 262.4524358265.

The spelling of 18078060 in words is "eighteen million, seventy-eight thousand, sixty".