20266394 has 8 divisors (see below), whose sum is σ = 30418740. Its totient is φ = 10126816.

The previous prime is 20266391. The next prime is 20266403. The reversal of 20266394 is 49366202.

It can be written as a sum of positive squares in 2 ways, for example, as 20133169 + 133225 = 4487^2 + 365^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20266394.

It is not an unprimeable number, because it can be changed into a prime (20266391) 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, 4232 + ... + 7644.

Almost surely, 2^20266394 is an apocalyptic number.

20266394 is a deficient number, since it is larger than the sum of its proper divisors (10152346).

20266394 is a wasteful number, since it uses less digits than its factorization.

20266394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6384.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 20266394 is about 4501.8211870309. The cubic root of 20266394 is about 272.6416243310.

The spelling of 20266394 in words is "twenty million, two hundred sixty-six thousand, three hundred ninety-four".