20494267 has 4 divisors (see below), whose sum is σ = 20521096. Its totient is φ = 20467440.

The previous prime is 20494237. The next prime is 20494283. The reversal of 20494267 is 76249402.

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 20494267 - 2⁷ = 20494139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20494207) 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, 12234 + ... + 13807.

It is an arithmetic number, because the mean of its divisors is an integer number (5130274).

Almost surely, 2^20494267 is an apocalyptic number.

20494267 is a deficient number, since it is larger than the sum of its proper divisors (26829).

20494267 is an equidigital number, since it uses as much as digits as its factorization.

20494267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26828.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 20494267 is about 4527.0594208603. The cubic root of 20494267 is about 273.6596685619.

The spelling of 20494267 in words is "twenty million, four hundred ninety-four thousand, two hundred sixty-seven".