18826530 has 32 divisors (see below), whose sum is σ = 47563200. Its totient is φ = 4756032.

The previous prime is 18826519. The next prime is 18826537. The reversal of 18826530 is 3562881.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18826491 and 18826500.

It is not an unprimeable number, because it can be changed into a prime (18826537) 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 15 ways as a sum of consecutive naturals, for example, 15945 + ... + 17084.

It is an arithmetic number, because the mean of its divisors is an integer number (1486350).

Almost surely, 2^18826530 is an apocalyptic number.

18826530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18826530 is an abundant number, since it is smaller than the sum of its proper divisors (28736670).

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

18826530 is a wasteful number, since it uses less digits than its factorization.

18826530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33058.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 18826530 is about 4338.9549433014. The cubic root of 18826530 is about 266.0255972503.

The spelling of 18826530 in words is "eighteen million, eight hundred twenty-six thousand, five hundred thirty".