20775274 has 16 divisors (see below), whose sum is σ = 34380360. Its totient is φ = 9354240.

The previous prime is 20775259. The next prime is 20775299. The reversal of 20775274 is 47257702.

It can be written as a sum of positive squares in 4 ways, for example, as 2772225 + 18003049 = 1665^2 + 4243^2 .

It is a super-2 number, since 2×20775274² = 863224019550152, 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 in 7 ways as a sum of consecutive naturals, for example, 8679 + ... + 10810.

Almost surely, 2^20775274 is an apocalyptic number.

20775274 is a deficient number, since it is larger than the sum of its proper divisors (13605086).

20775274 is a wasteful number, since it uses less digits than its factorization.

20775274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19545.

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 20775274 is about 4557.9901272381. The cubic root of 20775274 is about 274.9047559975.

The spelling of 20775274 in words is "twenty million, seven hundred seventy-five thousand, two hundred seventy-four".