20844046 has 4 divisors (see below), whose sum is σ = 31266072. Its totient is φ = 10422022.

The previous prime is 20844041. The next prime is 20844053. The reversal of 20844046 is 64044802.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20844041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5211010 + ... + 5211013.

It is an arithmetic number, because the mean of its divisors is an integer number (7816518).

Almost surely, 2^20844046 is an apocalyptic number.

20844046 is a deficient number, since it is larger than the sum of its proper divisors (10422026).

20844046 is a wasteful number, since it uses less digits than its factorization.

20844046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10422025.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 20844046 is about 4565.5280088945. The cubic root of 20844046 is about 275.2077592543.

Adding to 20844046 its reverse (64044802), we get a palindrome (84888848).

The spelling of 20844046 in words is "twenty million, eight hundred forty-four thousand, forty-six".