18227235 has 32 divisors (see below), whose sum is σ = 31627008. Its totient is φ = 8910720.

The previous prime is 18227233. The next prime is 18227249. The reversal of 18227235 is 53272281.

It is not a de Polignac number, because 18227235 - 2¹ = 18227233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18227233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40924 + ... + 41366.

It is an arithmetic number, because the mean of its divisors is an integer number (988344).

Almost surely, 2^18227235 is an apocalyptic number.

18227235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18227235 is a deficient number, since it is larger than the sum of its proper divisors (13399773).

18227235 is a wasteful number, since it uses less digits than its factorization.

18227235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675.

The product of its digits is 6720, while the sum is 30.

The square root of 18227235 is about 4269.3365995199. The cubic root of 18227235 is about 263.1723534968.

The spelling of 18227235 in words is "eighteen million, two hundred twenty-seven thousand, two hundred thirty-five".