21700514 has 16 divisors (see below), whose sum is σ = 35912160. Its totient is φ = 9752160.

The previous prime is 21700513. The next prime is 21700529. The reversal of 21700514 is 41500712.

It is not an unprimeable number, because it can be changed into a prime (21700513) by changing a digit.

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, 3584 + ... + 7499.

It is an arithmetic number, because the mean of its divisors is an integer number (2244510).

Almost surely, 2^21700514 is an apocalyptic number.

21700514 is a deficient number, since it is larger than the sum of its proper divisors (14211646).

21700514 is a wasteful number, since it uses less digits than its factorization.

21700514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11185.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 21700514 is about 4658.3810492488. The cubic root of 21700514 is about 278.9266474687.

The spelling of 21700514 in words is "twenty-one million, seven hundred thousand, five hundred fourteen".