18416880 has 60 divisors (see below), whose sum is σ = 61852440. Its totient is φ = 4910976.

The previous prime is 18416873. The next prime is 18416887. The reversal of 18416880 is 8861481.

It is an interprime number because it is at equal distance from previous prime (18416873) and next prime (18416887).

It is a tau number, because it is divible by the number of its divisors (60).

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 (18416887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12070 + ... + 13509.

It is an arithmetic number, because the mean of its divisors is an integer number (1030874).

Almost surely, 2^18416880 is an apocalyptic number.

18416880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18416880 is an abundant number, since it is smaller than the sum of its proper divisors (43435560).

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

18416880 is a wasteful number, since it uses less digits than its factorization.

18416880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25598 (or 25589 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 18416880 is about 4291.4892519963. The cubic root of 18416880 is about 264.0819304937.

The spelling of 18416880 in words is "eighteen million, four hundred sixteen thousand, eight hundred eighty".