18620082 has 36 divisors (see below), whose sum is σ = 43692714. Its totient is φ = 5728320.

The previous prime is 18620051. The next prime is 18620089. The reversal of 18620082 is 28002681.

It can be written as a sum of positive squares in 3 ways, for example, as 5377761 + 13242321 = 2319^2 + 3639^2 .

It is not an unprimeable number, because it can be changed into a prime (18620089) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19 + ... + 6102.

Almost surely, 2^18620082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18620082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21846357).

18620082 is an abundant number, since it is smaller than the sum of its proper divisors (25072632).

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

18620082 is a wasteful number, since it uses less digits than its factorization.

18620082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6155 (or 6139 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 18620082 is about 4315.0993036082. The cubic root of 18620082 is about 265.0496264007.

The spelling of 18620082 in words is "eighteen million, six hundred twenty thousand, eighty-two".