21034002 has 32 divisors (see below), whose sum is σ = 46062144. Its totient is φ = 6350400.

The previous prime is 21033989. The next prime is 21034003. The reversal of 21034002 is 20043012.

It is not an unprimeable number, because it can be changed into a prime (21034003) 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, 27408 + ... + 28164.

It is an arithmetic number, because the mean of its divisors is an integer number (1439442).

Almost surely, 2^21034002 is an apocalyptic number.

21034002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21034002 is an abundant number, since it is smaller than the sum of its proper divisors (25028142).

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

21034002 is a wasteful number, since it uses less digits than its factorization.

21034002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 21034002 is about 4586.2841167987. The cubic root of 21034002 is about 276.0412404243.

Adding to 21034002 its reverse (20043012), we get a palindrome (41077014).

It can be divided in two parts, 2103 and 4002, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 21034002 in words is "twenty-one million, thirty-four thousand, two".