18534336 has 56 divisors (see below), whose sum is σ = 50383440. Its totient is φ = 6008832.

The previous prime is 18534331. The next prime is 18534359. The reversal of 18534336 is 63343581.

It is a super-2 number, since 2×18534336² = 687043221921792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18534297 and 18534306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18534331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5800 + ... + 8408.

Almost surely, 2^18534336 is an apocalyptic number.

18534336 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 18534336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25191720).

18534336 is an abundant number, since it is smaller than the sum of its proper divisors (31849104).

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

18534336 is a wasteful number, since it uses less digits than its factorization.

18534336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661 (or 2651 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 18534336 is about 4305.1522621157. The cubic root of 18534336 is about 264.6421466187.

The spelling of 18534336 in words is "eighteen million, five hundred thirty-four thousand, three hundred thirty-six".