20274775 has 12 divisors (see below), whose sum is σ = 25952704. Its totient is φ = 15696000.

The previous prime is 20274773. The next prime is 20274791. The reversal of 20274775 is 57747202.

It is not a de Polignac number, because 20274775 - 2¹ = 20274773 is a prime.

It is a super-2 number, since 2×20274775² = 822133002601250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20274775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20274773) 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, 12306 + ... + 13855.

Almost surely, 2^20274775 is an apocalyptic number.

20274775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20274775 is a deficient number, since it is larger than the sum of its proper divisors (5677929).

20274775 is a wasteful number, since it uses less digits than its factorization.

20274775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26202 (or 26197 counting only the distinct ones).

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

The square root of 20274775 is about 4502.7519363163. The cubic root of 20274775 is about 272.6792020495.

The spelling of 20274775 in words is "twenty million, two hundred seventy-four thousand, seven hundred seventy-five".