18679272 has 48 divisors (see below), whose sum is σ = 47968320. Its totient is φ = 6061440.

The previous prime is 18679249. The next prime is 18679273. The reversal of 18679272 is 27297681.

It is not an unprimeable number, because it can be changed into a prime (18679273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40113 + ... + 40575.

It is an arithmetic number, because the mean of its divisors is an integer number (999340).

Almost surely, 2^18679272 is an apocalyptic number.

18679272 is a gapful number since it is divisible by the number (12) 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 18679272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23984160).

18679272 is an abundant number, since it is smaller than the sum of its proper divisors (29289048).

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

18679272 is a wasteful number, since it uses less digits than its factorization.

18679272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 509 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 18679272 is about 4321.9523366183. The cubic root of 18679272 is about 265.3301782128.

The spelling of 18679272 in words is "eighteen million, six hundred seventy-nine thousand, two hundred seventy-two".