18030260 has 12 divisors (see below), whose sum is σ = 37863588. Its totient is φ = 7212096.

The previous prime is 18030241. The next prime is 18030293. The reversal of 18030260 is 6203081.

It can be written as a sum of positive squares in 2 ways, for example, as 13586596 + 4443664 = 3686^2 + 2108^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 901513 = 18030260 / (1 + 8 + 0 + 3 + 0 + 2 + 6 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450737 + ... + 450776.

It is an arithmetic number, because the mean of its divisors is an integer number (3155299).

Almost surely, 2^18030260 is an apocalyptic number.

18030260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18030260 is an abundant number, since it is smaller than the sum of its proper divisors (19833328).

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

18030260 is a wasteful number, since it uses less digits than its factorization.

18030260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901522 (or 901520 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 18030260 is about 4246.2053647934. The cubic root of 18030260 is about 262.2209157850.

The spelling of 18030260 in words is "eighteen million, thirty thousand, two hundred sixty".