21036702 has 16 divisors (see below), whose sum is σ = 42650640. Its totient is φ = 6916032.

The previous prime is 21036689. The next prime is 21036709. The reversal of 21036702 is 20763012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21036709) 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, 23577 + ... + 24452.

It is an arithmetic number, because the mean of its divisors is an integer number (2665665).

Almost surely, 2^21036702 is an apocalyptic number.

21036702 is an abundant number, since it is smaller than the sum of its proper divisors (21613938).

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

21036702 is a wasteful number, since it uses less digits than its factorization.

21036702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48107.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 21036702 is about 4586.5784632992. The cubic root of 21036702 is about 276.0530511338.

Adding to 21036702 its reverse (20763012), we get a palindrome (41799714).

The spelling of 21036702 in words is "twenty-one million, thirty-six thousand, seven hundred two".