18274746 has 48 divisors (see below), whose sum is σ = 43256160. Its totient is φ = 5130720.

The previous prime is 18274741. The next prime is 18274757. The reversal of 18274746 is 64747281.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18274741) 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, 17425 + ... + 18443.

It is an arithmetic number, because the mean of its divisors is an integer number (901170).

Almost surely, 2^18274746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18274746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21628080).

18274746 is an abundant number, since it is smaller than the sum of its proper divisors (24981414).

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

18274746 is a wasteful number, since it uses less digits than its factorization.

18274746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1092 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 18274746 is about 4274.8971917463. The cubic root of 18274746 is about 263.4008162609.

The spelling of 18274746 in words is "eighteen million, two hundred seventy-four thousand, seven hundred forty-six".