21740314 has 24 divisors (see below), whose sum is σ = 35863740. Its totient is φ = 9870336.

The previous prime is 21740309. The next prime is 21740317. The reversal of 21740314 is 41304712.

It can be written as a sum of positive squares in 6 ways, for example, as 21464689 + 275625 = 4633^2 + 525^2 .

It is not an unprimeable number, because it can be changed into a prime (21740317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16114 + ... + 17410.

Almost surely, 2^21740314 is an apocalyptic number.

21740314 is a deficient number, since it is larger than the sum of its proper divisors (14123426).

21740314 is a wasteful number, since it uses less digits than its factorization.

21740314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362 (or 1345 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 21740314 is about 4662.6509627035. The cubic root of 21740314 is about 279.0970658695.

The spelling of 21740314 in words is "twenty-one million, seven hundred forty thousand, three hundred fourteen".