18235936 has 36 divisors (see below), whose sum is σ = 37160046. Its totient is φ = 8808960.

The previous prime is 18235927. The next prime is 18235937. The reversal of 18235936 is 63953281.

It can be written as a sum of positive squares in only one way, i.e., 14776336 + 3459600 = 3844^2 + 1860^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18235895 and 18235904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18235937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30456 + ... + 31048.

Almost surely, 2^18235936 is an apocalyptic number.

18235936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18235936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18580023).

18235936 is an abundant number, since it is smaller than the sum of its proper divisors (18924110).

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

18235936 is an equidigital number, since it uses as much as digits as its factorization.

18235936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 626 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 18235936 is about 4270.3554887152. The cubic root of 18235936 is about 263.2142230468.

The spelling of 18235936 in words is "eighteen million, two hundred thirty-five thousand, nine hundred thirty-six".