20443294 has 4 divisors (see below), whose sum is σ = 30664944. Its totient is φ = 10221646.

The previous prime is 20443279. The next prime is 20443301. The reversal of 20443294 is 49234402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110822 + ... + 5110825.

It is an arithmetic number, because the mean of its divisors is an integer number (7666236).

Almost surely, 2^20443294 is an apocalyptic number.

20443294 is a deficient number, since it is larger than the sum of its proper divisors (10221650).

20443294 is a wasteful number, since it uses less digits than its factorization.

20443294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10221649.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 20443294 is about 4521.4261024593. The cubic root of 20443294 is about 273.4325996118.

Adding to 20443294 its reverse (49234402), we get a palindrome (69677696).

The spelling of 20443294 in words is "twenty million, four hundred forty-three thousand, two hundred ninety-four".