18768078 has 96 divisors (see below), whose sum is σ = 49986720. Its totient is φ = 5201280.

The previous prime is 18768073. The next prime is 18768089. The reversal of 18768078 is 87086781.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18768073) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108400 + ... + 108572.

It is an arithmetic number, because the mean of its divisors is an integer number (520695).

Almost surely, 2^18768078 is an apocalyptic number.

18768078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18768078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24993360).

18768078 is an abundant number, since it is smaller than the sum of its proper divisors (31218642).

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

18768078 is a wasteful number, since it uses less digits than its factorization.

18768078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 18768078 is about 4332.2139836347. The cubic root of 18768078 is about 265.7499959438.

It can be divided in two parts, 187 and 68078, that added together give a triangular number (68265 = T₃₆₉).

The spelling of 18768078 in words is "eighteen million, seven hundred sixty-eight thousand, seventy-eight".