20073291 has 24 divisors (see below), whose sum is σ = 32777280. Its totient is φ = 10865232.

The previous prime is 20073289. The next prime is 20073293. The reversal of 20073291 is 19237002.

It is an interprime number because it is at equal distance from previous prime (20073289) and next prime (20073293).

It is not a de Polignac number, because 20073291 - 2¹ = 20073289 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20073293) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 801 + ... + 6386.

It is an arithmetic number, because the mean of its divisors is an integer number (1365720).

Almost surely, 2^20073291 is an apocalyptic number.

20073291 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20073291 is a deficient number, since it is larger than the sum of its proper divisors (12703989).

20073291 is a wasteful number, since it uses less digits than its factorization.

20073291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7223 (or 7216 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 20073291 is about 4480.3226446317. The cubic root of 20073291 is about 271.7729280989.

The spelling of 20073291 in words is "twenty million, seventy-three thousand, two hundred ninety-one".