18284830 has 16 divisors (see below), whose sum is σ = 33112800. Its totient is φ = 7269472.

The previous prime is 18284767. The next prime is 18284831. The reversal of 18284830 is 3848281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18284831) 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, 3805 + ... + 7144.

It is an arithmetic number, because the mean of its divisors is an integer number (2069550).

Almost surely, 2^18284830 is an apocalyptic number.

18284830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18284830 is a deficient number, since it is larger than the sum of its proper divisors (14827970).

18284830 is a wasteful number, since it uses less digits than its factorization.

18284830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11123.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 18284830 is about 4276.0764726557. The cubic root of 18284830 is about 263.4492555193.

The spelling of 18284830 in words is "eighteen million, two hundred eighty-four thousand, eight hundred thirty".