18236275 has 6 divisors (see below), whose sum is σ = 22613012. Its totient is φ = 14589000.

The previous prime is 18236269. The next prime is 18236321. The reversal of 18236275 is 57263281.

It is a happy number.

It is not a de Polignac number, because 18236275 - 2⁵ = 18236243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18236275.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 364701 + ... + 364750.

Almost surely, 2^18236275 is an apocalyptic number.

18236275 is a deficient number, since it is larger than the sum of its proper divisors (4376737).

18236275 is an equidigital number, since it uses as much as digits as its factorization.

18236275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729461 (or 729456 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 18236275 is about 4270.3951807766. The cubic root of 18236275 is about 263.2158540583.

The spelling of 18236275 in words is "eighteen million, two hundred thirty-six thousand, two hundred seventy-five".