18824130 has 128 divisors (see below), whose sum is σ = 56125440. Its totient is φ = 4458240.

The previous prime is 18824129. The next prime is 18824137. The reversal of 18824130 is 3142881.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 18824094 and 18824103.

It is not an unprimeable number, because it can be changed into a prime (18824137) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 108724 + ... + 108896.

It is an arithmetic number, because the mean of its divisors is an integer number (438480).

Almost surely, 2^18824130 is an apocalyptic number.

18824130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18824130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28062720).

18824130 is an abundant number, since it is smaller than the sum of its proper divisors (37301310).

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

18824130 is a wasteful number, since it uses less digits than its factorization.

18824130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 18824130 is about 4338.6783701952. The cubic root of 18824130 is about 266.0142924840.

The spelling of 18824130 in words is "eighteen million, eight hundred twenty-four thousand, one hundred thirty".