20990714 has 4 divisors (see below), whose sum is σ = 31486074. Its totient is φ = 10495356.

The previous prime is 20990707. The next prime is 20990759. The reversal of 20990714 is 41709902.

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., 20857489 + 133225 = 4567^2 + 365^2 .

It is a super-2 number, since 2×20990714² = 881220148459592, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5247677 + ... + 5247680.

Almost surely, 2^20990714 is an apocalyptic number.

20990714 is a deficient number, since it is larger than the sum of its proper divisors (10495360).

20990714 is a wasteful number, since it uses less digits than its factorization.

20990714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10495359.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 20990714 is about 4581.5623972614. The cubic root of 20990714 is about 275.8517459761.

The spelling of 20990714 in words is "twenty million, nine hundred ninety thousand, seven hundred fourteen".