18346228 has 24 divisors (see below), whose sum is σ = 33295752. Its totient is φ = 8838144.

The previous prime is 18346219. The next prime is 18346243. The reversal of 18346228 is 82264381.

It can be written as a sum of positive squares in 4 ways, for example, as 605284 + 17740944 = 778^2 + 4212^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18346193 and 18346202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16176 + ... + 17272.

It is an arithmetic number, because the mean of its divisors is an integer number (1387323).

Almost surely, 2^18346228 is an apocalyptic number.

It is an amenable number.

18346228 is a deficient number, since it is larger than the sum of its proper divisors (14949524).

18346228 is a wasteful number, since it uses less digits than its factorization.

18346228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1249 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 18346228 is about 4283.2497008697. The cubic root of 18346228 is about 263.7438018055.

The spelling of 18346228 in words is "eighteen million, three hundred forty-six thousand, two hundred twenty-eight".