18074660 has 24 divisors (see below), whose sum is σ = 38174136. Its totient is φ = 7188480.

The previous prime is 18074629. The next prime is 18074671. The reversal of 18074660 is 6647081.

It can be written as a sum of positive squares in 4 ways, for example, as 164836 + 17909824 = 406^2 + 4232^2 .

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, 1124 + ... + 6116.

It is an arithmetic number, because the mean of its divisors is an integer number (1590589).

Almost surely, 2^18074660 is an apocalyptic number.

18074660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18074660 is an abundant number, since it is smaller than the sum of its proper divisors (20099476).

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

18074660 is a wasteful number, since it uses less digits than its factorization.

18074660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5183 (or 5181 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 18074660 is about 4251.4303475419. The cubic root of 18074660 is about 262.4359813649.

The spelling of 18074660 in words is "eighteen million, seventy-four thousand, six hundred sixty".