18214250 has 32 divisors (see below), whose sum is σ = 34948368. Its totient is φ = 7104000.

The previous prime is 18214247. The next prime is 18214277. The reversal of 18214250 is 5241281.

It can be written as a sum of positive squares in 8 ways, for example, as 177241 + 18037009 = 421^2 + 4247^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9362 + ... + 11138.

Almost surely, 2^18214250 is an apocalyptic number.

18214250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18214250 is a deficient number, since it is larger than the sum of its proper divisors (16734118).

18214250 is a wasteful number, since it uses less digits than its factorization.

18214250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835 (or 1825 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 18214250 is about 4267.8156005151. The cubic root of 18214250 is about 263.1098443849.

The spelling of 18214250 in words is "eighteen million, two hundred fourteen thousand, two hundred fifty".