21703002 has 16 divisors (see below), whose sum is σ = 44330112. Its totient is φ = 7080320.

The previous prime is 21702983. The next prime is 21703009. The reversal of 21703002 is 20030712.

It is not an unprimeable number, because it can be changed into a prime (21703009) 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, 38199 + ... + 38762.

It is an arithmetic number, because the mean of its divisors is an integer number (2770632).

Almost surely, 2^21703002 is an apocalyptic number.

21703002 is an abundant number, since it is smaller than the sum of its proper divisors (22627110).

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

21703002 is a wasteful number, since it uses less digits than its factorization.

21703002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77013.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 21703002 is about 4658.6480871601. The cubic root of 21703002 is about 278.9373068626.

Adding to 21703002 its reverse (20030712), we get a palindrome (41733714).

The spelling of 21703002 in words is "twenty-one million, seven hundred three thousand, two".