21366702 has 48 divisors (see below), whose sum is σ = 53718912. Its totient is φ = 6011280.

The previous prime is 21366689. The next prime is 21366713. The reversal of 21366702 is 20766312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7177 + ... + 9707.

It is an arithmetic number, because the mean of its divisors is an integer number (1119144).

Almost surely, 2^21366702 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21366702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26859456).

21366702 is an abundant number, since it is smaller than the sum of its proper divisors (32352210).

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

21366702 is a wasteful number, since it uses less digits than its factorization.

21366702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613 (or 2610 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 21366702 is about 4622.4130062122. The cubic root of 21366702 is about 277.4890377944.

The spelling of 21366702 in words is "twenty-one million, three hundred sixty-six thousand, seven hundred two".