18679320 has 192 divisors, whose sum is σ = 68234400. Its totient is φ = 4392960.

The previous prime is 18679303. The next prime is 18679321. The reversal of 18679320 is 2397681.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18679321) 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, 209836 + ... + 209924.

Almost surely, 2^18679320 is an apocalyptic number.

18679320 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 18679320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34117200).

18679320 is an abundant number, since it is smaller than the sum of its proper divisors (49555080).

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

18679320 is a wasteful number, since it uses less digits than its factorization.

18679320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 18679320 is about 4321.9578896607. The cubic root of 18679320 is about 265.3304054849.

The spelling of 18679320 in words is "eighteen million, six hundred seventy-nine thousand, three hundred twenty".