18823030 has 32 divisors (see below), whose sum is σ = 35821440. Its totient is φ = 7109760.

The previous prime is 18823009. The next prime is 18823031. The reversal of 18823030 is 3032881.

It is a junction number, because it is equal to n+sod(n) for n = 18822986 and 18823004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18823031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12940 + ... + 14320.

It is an arithmetic number, because the mean of its divisors is an integer number (1119420).

Almost surely, 2^18823030 is an apocalyptic number.

18823030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18823030 is a deficient number, since it is larger than the sum of its proper divisors (16998410).

18823030 is a wasteful number, since it uses less digits than its factorization.

18823030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 18823030 is about 4338.5516016293. The cubic root of 18823030 is about 266.0091108116.

The spelling of 18823030 in words is "eighteen million, eight hundred twenty-three thousand, thirty".