18305896 has 32 divisors (see below), whose sum is σ = 39600000. Its totient is φ = 7770816.

The previous prime is 18305891. The next prime is 18305897. The reversal of 18305896 is 69850381.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18305891) 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, 4605 + ... + 7603.

It is an arithmetic number, because the mean of its divisors is an integer number (1237500).

Almost surely, 2^18305896 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 18305896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19800000).

18305896 is an abundant number, since it is smaller than the sum of its proper divisors (21294104).

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

18305896 is a wasteful number, since it uses less digits than its factorization.

18305896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121 (or 3117 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 18305896 is about 4278.5390029775. The cubic root of 18305896 is about 263.5503902133.

The spelling of 18305896 in words is "eighteen million, three hundred five thousand, eight hundred ninety-six".