18070880 has 48 divisors (see below), whose sum is σ = 43518384. Its totient is φ = 7088640.

The previous prime is 18070867. The next prime is 18070891. The reversal of 18070880 is 8807081.

18070880 is nontrivially palindromic in base 14.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7415 + ... + 9545.

It is an arithmetic number, because the mean of its divisors is an integer number (906633).

Almost surely, 2^18070880 is an apocalyptic number.

18070880 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 18070880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21759192).

18070880 is an abundant number, since it is smaller than the sum of its proper divisors (25447504).

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

18070880 is a wasteful number, since it uses less digits than its factorization.

18070880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2191 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 18070880 is about 4250.9857680308. The cubic root of 18070880 is about 262.4176854528.

The spelling of 18070880 in words is "eighteen million, seventy thousand, eight hundred eighty".