21076514 has 4 divisors (see below), whose sum is σ = 31614774. Its totient is φ = 10538256.

The previous prime is 21076513. The next prime is 21076541. The reversal of 21076514 is 41567012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21022225 + 54289 = 4585^2 + 233^2 .

It is not an unprimeable number, because it can be changed into a prime (21076513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5269127 + ... + 5269130.

Almost surely, 2^21076514 is an apocalyptic number.

21076514 is a deficient number, since it is larger than the sum of its proper divisors (10538260).

21076514 is a wasteful number, since it uses less digits than its factorization.

21076514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10538259.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 21076514 is about 4590.9164662407. The cubic root of 21076514 is about 276.2270850412.

The spelling of 21076514 in words is "twenty-one million, seventy-six thousand, five hundred fourteen".