18230550 has 48 divisors (see below), whose sum is σ = 48694800. Its totient is φ = 4487040.

The previous prime is 18230549. The next prime is 18230551. The reversal of 18230550 is 5503281.

It is an interprime number because it is at equal distance from previous prime (18230549) and next prime (18230551).

It is a self number, because there is not a number n which added to its sum of digits gives 18230550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18230551) 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 23 ways as a sum of consecutive naturals, for example, 2725 + ... + 6624.

It is an arithmetic number, because the mean of its divisors is an integer number (1014475).

Almost surely, 2^18230550 is an apocalyptic number.

18230550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18230550 is an abundant number, since it is smaller than the sum of its proper divisors (30464250).

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

18230550 is a wasteful number, since it uses less digits than its factorization.

18230550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9377 (or 9372 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 18230550 is about 4269.7248154887. The cubic root of 18230550 is about 263.1883069765.

The spelling of 18230550 in words is "eighteen million, two hundred thirty thousand, five hundred fifty".