18274748 has 12 divisors (see below), whose sum is σ = 33012672. Its totient is φ = 8842560.

The previous prime is 18274741. The next prime is 18274757. The reversal of 18274748 is 84747281.

It is a happy number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 73565 + ... + 73812.

It is an arithmetic number, because the mean of its divisors is an integer number (2751056).

Almost surely, 2^18274748 is an apocalyptic number.

It is an amenable number.

18274748 is a deficient number, since it is larger than the sum of its proper divisors (14737924).

18274748 is a wasteful number, since it uses less digits than its factorization.

18274748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147412 (or 147410 counting only the distinct ones).

The product of its digits is 100352, while the sum is 41.

The square root of 18274748 is about 4274.8974256700. The cubic root of 18274748 is about 263.4008258699.

The spelling of 18274748 in words is "eighteen million, two hundred seventy-four thousand, seven hundred forty-eight".