20834291 has 4 divisors (see below), whose sum is σ = 21029112. Its totient is φ = 20639472.

The previous prime is 20834249. The next prime is 20834321. The reversal of 20834291 is 19243802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20834291 - 2¹⁸ = 20572147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20834491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97250 + ... + 97463.

It is an arithmetic number, because the mean of its divisors is an integer number (5257278).

Almost surely, 2^20834291 is an apocalyptic number.

20834291 is a deficient number, since it is larger than the sum of its proper divisors (194821).

20834291 is a wasteful number, since it uses less digits than its factorization.

20834291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194820.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20834291 is about 4564.4595517980. The cubic root of 20834291 is about 275.1648202042.

The spelling of 20834291 in words is "twenty million, eight hundred thirty-four thousand, two hundred ninety-one".