20805314 has 8 divisors (see below), whose sum is σ = 33043788. Its totient is φ = 9790720.

The previous prime is 20805307. The next prime is 20805329. The reversal of 20805314 is 41350802.

20805314 = T₁₅₅₆ + T₁₅₅₇ + ... + T₁₅₇₂.

It can be written as a sum of positive squares in 2 ways, for example, as 20025625 + 779689 = 4475^2 + 883^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20805314² = 865722181277192, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20805314.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305927 + ... + 305994.

Almost surely, 2^20805314 is an apocalyptic number.

20805314 is a deficient number, since it is larger than the sum of its proper divisors (12238474).

20805314 is a wasteful number, since it uses less digits than its factorization.

20805314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611940.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20805314 is about 4561.2842489808. The cubic root of 20805314 is about 275.0371916641.

The spelling of 20805314 in words is "twenty million, eight hundred five thousand, three hundred fourteen".