18230136 has 16 divisors (see below), whose sum is σ = 45575400. Its totient is φ = 6076704.

The previous prime is 18230131. The next prime is 18230161. The reversal of 18230136 is 63103281.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 759589 = 18230136 / (1 + 8 + 2 + 3 + 0 + 1 + 3 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18230131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379771 + ... + 379818.

Almost surely, 2^18230136 is an apocalyptic number.

It is an amenable number.

18230136 is an abundant number, since it is smaller than the sum of its proper divisors (27345264).

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

18230136 is a wasteful number, since it uses less digits than its factorization.

18230136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759598 (or 759594 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 18230136 is about 4269.6763343373. The cubic root of 18230136 is about 263.1863147019.

The spelling of 18230136 in words is "eighteen million, two hundred thirty thousand, one hundred thirty-six".