20774299 has 16 divisors (see below), whose sum is σ = 25740288. Its totient is φ = 16326432.

The previous prime is 20774293. The next prime is 20774317. The reversal of 20774299 is 99247702.

It is a cyclic number.

It is not a de Polignac number, because 20774299 - 2¹¹ = 20772251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20774293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14514 + ... + 15880.

It is an arithmetic number, because the mean of its divisors is an integer number (1608768).

Almost surely, 2^20774299 is an apocalyptic number.

20774299 is a deficient number, since it is larger than the sum of its proper divisors (4965989).

20774299 is a wasteful number, since it uses less digits than its factorization.

20774299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 20774299 is about 4557.8831709468. The cubic root of 20774299 is about 274.9004554312.

The spelling of 20774299 in words is "twenty million, seven hundred seventy-four thousand, two hundred ninety-nine".