18232930 has 8 divisors (see below), whose sum is σ = 32819292. Its totient is φ = 7293168.

The previous prime is 18232883. The next prime is 18232931. The reversal of 18232930 is 3923281.

It can be written as a sum of positive squares in 2 ways, for example, as 18054001 + 178929 = 4249^2 + 423^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18232931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911637 + ... + 911656.

Almost surely, 2^18232930 is an apocalyptic number.

18232930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18232930 is a deficient number, since it is larger than the sum of its proper divisors (14586362).

18232930 is a wasteful number, since it uses less digits than its factorization.

18232930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823300.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 18232930 is about 4270.0035128791. The cubic root of 18232930 is about 263.1997595641.

It can be divided in two parts, 1823 and 2930, that added together give a triangular number (4753 = T₉₇).

The spelling of 18232930 in words is "eighteen million, two hundred thirty-two thousand, nine hundred thirty".