18274812 has 24 divisors (see below), whose sum is σ = 43021776. Its totient is φ = 6037248.

The previous prime is 18274799. The next prime is 18274819. The reversal of 18274812 is 21847281.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18274819) 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, 5383 + ... + 8094.

It is an arithmetic number, because the mean of its divisors is an integer number (1792574).

Almost surely, 2^18274812 is an apocalyptic number.

18274812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18274812 is an abundant number, since it is smaller than the sum of its proper divisors (24746964).

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

18274812 is a wasteful number, since it uses less digits than its factorization.

18274812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13597 (or 13595 counting only the distinct ones).

The product of its digits is 7168, while the sum is 33.

The square root of 18274812 is about 4274.9049112232. The cubic root of 18274812 is about 263.4011333549.

The spelling of 18274812 in words is "eighteen million, two hundred seventy-four thousand, eight hundred twelve".