18255016 has 32 divisors (see below), whose sum is σ = 37094400. Its totient is φ = 8372160.

The previous prime is 18254983. The next prime is 18255019. The reversal of 18255016 is 61055281.

18255016 is nontrivially palindromic in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18255019) 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, 19405 + ... + 20323.

It is an arithmetic number, because the mean of its divisors is an integer number (1159200).

Almost surely, 2^18255016 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 18255016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18547200).

18255016 is an abundant number, since it is smaller than the sum of its proper divisors (18839384).

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

18255016 is a wasteful number, since it uses less digits than its factorization.

18255016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 18255016 is about 4272.5889107191. The cubic root of 18255016 is about 263.3059901464.

The spelling of 18255016 in words is "eighteen million, two hundred fifty-five thousand, sixteen".