18800340 has 48 divisors (see below), whose sum is σ = 56692608. Its totient is φ = 4627584.

The previous prime is 18800333. The next prime is 18800357. The reversal of 18800340 is 4300881.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18800340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11272 + ... + 12831.

It is an arithmetic number, because the mean of its divisors is an integer number (1181096).

Almost surely, 2^18800340 is an apocalyptic number.

18800340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18800340 is an abundant number, since it is smaller than the sum of its proper divisors (37892268).

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

18800340 is a wasteful number, since it uses less digits than its factorization.

18800340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24128 (or 24126 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 18800340 is about 4335.9358851348. The cubic root of 18800340 is about 265.9021819840.

The spelling of 18800340 in words is "eighteen million, eight hundred thousand, three hundred forty".