20199267 has 32 divisors (see below), whose sum is σ = 34076160. Its totient is φ = 11705760.

The previous prime is 20199233. The next prime is 20199269. The reversal of 20199267 is 76299102.

It is not a de Polignac number, because 20199267 - 2⁶ = 20199203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20199269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5353 + ... + 8309.

It is an arithmetic number, because the mean of its divisors is an integer number (1064880).

Almost surely, 2^20199267 is an apocalyptic number.

20199267 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20199267 is a deficient number, since it is larger than the sum of its proper divisors (13876893).

20199267 is a wasteful number, since it uses less digits than its factorization.

20199267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 20199267 is about 4494.3594649293. The cubic root of 20199267 is about 272.3402739283.

The spelling of 20199267 in words is "twenty million, one hundred ninety-nine thousand, two hundred sixty-seven".