18127252 has 72 divisors (see below), whose sum is σ = 38997728. Its totient is φ = 7318080.

The previous prime is 18127247. The next prime is 18127259. The reversal of 18127252 is 25272181.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 18127252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18127259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270523 + ... + 270589.

Almost surely, 2^18127252 is an apocalyptic number.

It is an amenable number.

18127252 is an abundant number, since it is smaller than the sum of its proper divisors (20870476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18127252 is a wasteful number, since it uses less digits than its factorization.

18127252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 136 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 18127252 is about 4257.6110672536. The cubic root of 18127252 is about 262.6902723280.

Subtracting 18127252 from its reverse (25272181), we obtain a square (7144929 = 2673²).

The spelling of 18127252 in words is "eighteen million, one hundred twenty-seven thousand, two hundred fifty-two".