20018082 has 32 divisors (see below), whose sum is σ = 45892224. Its totient is φ = 5702400.

The previous prime is 20018081. The next prime is 20018087. The reversal of 20018082 is 28081002.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20018081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22282 + ... + 23162.

It is an arithmetic number, because the mean of its divisors is an integer number (1434132).

Almost surely, 2^20018082 is an apocalyptic number.

20018082 is an abundant number, since it is smaller than the sum of its proper divisors (25874142).

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

20018082 is a wasteful number, since it uses less digits than its factorization.

20018082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 20018082 is about 4474.1571273258. The cubic root of 20018082 is about 271.5235405179.

Adding to 20018082 its reverse (28081002), we get a palindrome (48099084).

The spelling of 20018082 in words is "twenty million, eighteen thousand, eighty-two".