18202244 has 24 divisors (see below), whose sum is σ = 32960928. Its totient is φ = 8789760.

The previous prime is 18202243. The next prime is 18202253. The reversal of 18202244 is 44220281.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18202243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16139 + ... + 17229.

It is an arithmetic number, because the mean of its divisors is an integer number (1373372).

Almost surely, 2^18202244 is an apocalyptic number.

It is an amenable number.

18202244 is a deficient number, since it is larger than the sum of its proper divisors (14758684).

18202244 is a wasteful number, since it uses less digits than its factorization.

18202244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235 (or 1233 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 18202244 is about 4266.4087942906. The cubic root of 18202244 is about 263.0520216890.

The spelling of 18202244 in words is "eighteen million, two hundred two thousand, two hundred forty-four".