18028570 has 24 divisors (see below), whose sum is σ = 37750644. Its totient is φ = 6181056.

The previous prime is 18028547. The next prime is 18028579. The reversal of 18028570 is 7582081.

It can be written as a sum of positive squares in 2 ways, for example, as 16088121 + 1940449 = 4011^2 + 1393^2 .

It is not an unprimeable number, because it can be changed into a prime (18028579) 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, 17907 + ... + 18886.

Almost surely, 2^18028570 is an apocalyptic number.

18028570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18028570 is an abundant number, since it is smaller than the sum of its proper divisors (19722074).

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

18028570 is a wasteful number, since it uses less digits than its factorization.

18028570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36814 (or 36807 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 18028570 is about 4246.0063589213. The cubic root of 18028570 is about 262.2127227585.

The spelling of 18028570 in words is "eighteen million, twenty-eight thousand, five hundred seventy".