18012260 has 24 divisors (see below), whose sum is σ = 43229760. Its totient is φ = 6175584.

The previous prime is 18012259. The next prime is 18012307. The reversal of 18012260 is 6221081.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 64190 + ... + 64469.

It is an arithmetic number, because the mean of its divisors is an integer number (1801240).

Almost surely, 2^18012260 is an apocalyptic number.

18012260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18012260 is an abundant number, since it is smaller than the sum of its proper divisors (25217500).

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

18012260 is a wasteful number, since it uses less digits than its factorization.

18012260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128675 (or 128673 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 18012260 is about 4244.0852960326. The cubic root of 18012260 is about 262.1336264533.

The spelling of 18012260 in words is "eighteen million, twelve thousand, two hundred sixty".