20704002 has 48 divisors (see below), whose sum is σ = 47301408. Its totient is φ = 5991040.

The previous prime is 20703967. The next prime is 20704007. The reversal of 20704002 is 20040702.

It is a super-3 number, since 3×20704002³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20704007) 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 23 ways as a sum of consecutive naturals, for example, 34618 + ... + 35210.

It is an arithmetic number, because the mean of its divisors is an integer number (985446).

Almost surely, 2^20704002 is an apocalyptic number.

20704002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20704002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23650704).

20704002 is an abundant number, since it is smaller than the sum of its proper divisors (26597406).

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

20704002 is a wasteful number, since it uses less digits than its factorization.

20704002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 20704002 is about 4550.1650519514. The cubic root of 20704002 is about 274.5900315493.

Adding to 20704002 its reverse (20040702), we get a palindrome (40744704).

The spelling of 20704002 in words is "twenty million, seven hundred four thousand, two".