18828936 has 120 divisors (see below), whose sum is σ = 61452270. Its totient is φ = 5370624.

The previous prime is 18828923. The next prime is 18828937. The reversal of 18828936 is 63982881.

It can be written as a sum of positive squares in only one way, i.e., 15256836 + 3572100 = 3906^2 + 1890^2 .

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 18828891 and 18828900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18828937) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 31456 + ... + 32048.

Almost surely, 2^18828936 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 18828936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30726135).

18828936 is an abundant number, since it is smaller than the sum of its proper divisors (42623334).

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

18828936 is a wasteful number, since it uses less digits than its factorization.

18828936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 605 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 18828936 is about 4339.2321901461. The cubic root of 18828936 is about 266.0369293142.

The spelling of 18828936 in words is "eighteen million, eight hundred twenty-eight thousand, nine hundred thirty-six".