18824364 has 144 divisors (see below), whose sum is σ = 56565600. Its totient is φ = 5225472.

The previous prime is 18824341. The next prime is 18824369. The reversal of 18824364 is 46342881.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (36864) is a multiple of the sum of its prime factors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18824369) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 257832 + ... + 257904.

Almost surely, 2^18824364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18824364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28282800).

18824364 is an abundant number, since it is smaller than the sum of its proper divisors (37741236).

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

18824364 is a wasteful number, since it uses less digits than its factorization.

18824364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 139 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 18824364 is about 4338.7053368488. The cubic root of 18824364 is about 266.0153947409.

The spelling of 18824364 in words is "eighteen million, eight hundred twenty-four thousand, three hundred sixty-four".