18830826 has 64 divisors (see below), whose sum is σ = 49397760. Its totient is φ = 5203440.

The previous prime is 18830809. The next prime is 18830893. The reversal of 18830826 is 62803881.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10915 + ... + 12521.

It is an arithmetic number, because the mean of its divisors is an integer number (771840).

Almost surely, 2^18830826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18830826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24698880).

18830826 is an abundant number, since it is smaller than the sum of its proper divisors (30566934).

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

18830826 is a wasteful number, since it uses less digits than its factorization.

18830826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656 (or 1650 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 18830826 is about 4339.4499651454. The cubic root of 18830826 is about 266.0458303831.

The spelling of 18830826 in words is "eighteen million, eight hundred thirty thousand, eight hundred twenty-six".