20294691 has 4 divisors (see below), whose sum is σ = 27059592. Its totient is φ = 13529792.

The previous prime is 20294653. The next prime is 20294777. The reversal of 20294691 is 19649202.

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 20294691 - 2⁷ = 20294563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20294891) 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, 3382446 + ... + 3382451.

It is an arithmetic number, because the mean of its divisors is an integer number (6764898).

Almost surely, 2^20294691 is an apocalyptic number.

20294691 is a deficient number, since it is larger than the sum of its proper divisors (6764901).

20294691 is an equidigital number, since it uses as much as digits as its factorization.

20294691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6764900.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 20294691 is about 4504.9629299252. The cubic root of 20294691 is about 272.7684574874.

The spelling of 20294691 in words is "twenty million, two hundred ninety-four thousand, six hundred ninety-one".