18712064 has 80 divisors (see below), whose sum is σ = 44782848. Its totient is φ = 7636992.

The previous prime is 18712061. The next prime is 18712069. The reversal of 18712064 is 46021781.

18712064 = T₁₆₇ + T₁₆₈ + ... + T₄₈₈.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18712061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82319 + ... + 82545.

Almost surely, 2^18712064 is an apocalyptic number.

18712064 is a gapful number since it is divisible by the number (14) 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 18712064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22391424).

18712064 is an abundant number, since it is smaller than the sum of its proper divisors (26070784).

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

18712064 is an equidigital number, since it uses as much as digits as its factorization.

18712064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 18712064 is about 4325.7443290144. The cubic root of 18712064 is about 265.4853523672.

The spelling of 18712064 in words is "eighteen million, seven hundred twelve thousand, sixty-four".