18265716 has 96 divisors (see below), whose sum is σ = 55668480. Its totient is φ = 5069952.

The previous prime is 18265699. The next prime is 18265717. The reversal of 18265716 is 61756281.

18265716 is a `hidden beast` number, since 1 + 82 + 6 + 571 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18265717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27646 + ... + 28298.

It is an arithmetic number, because the mean of its divisors is an integer number (579880).

Almost surely, 2^18265716 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 18265716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27834240).

18265716 is an abundant number, since it is smaller than the sum of its proper divisors (37402764).

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

18265716 is a wasteful number, since it uses less digits than its factorization.

18265716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 702 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 18265716 is about 4273.8408954944. The cubic root of 18265716 is about 263.3574248464.

It can be divided in two parts, 18265 and 716, that added together give a palindrome (18981).

The spelling of 18265716 in words is "eighteen million, two hundred sixty-five thousand, seven hundred sixteen".