21616702 has 16 divisors (see below), whose sum is σ = 33411312. Its totient is φ = 10483200.

The previous prime is 21616697. The next prime is 21616729. The reversal of 21616702 is 20761612.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12702 + ... + 14302.

It is an arithmetic number, because the mean of its divisors is an integer number (2088207).

Almost surely, 2^21616702 is an apocalyptic number.

21616702 is a deficient number, since it is larger than the sum of its proper divisors (11794610).

21616702 is a wasteful number, since it uses less digits than its factorization.

21616702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 21616702 is about 4649.3765173408. The cubic root of 21616702 is about 278.5670928351.

The spelling of 21616702 in words is "twenty-one million, six hundred sixteen thousand, seven hundred two".