20444342 has 16 divisors (see below), whose sum is σ = 32970240. Its totient is φ = 9477288.

The previous prime is 20444341. The next prime is 20444351. The reversal of 20444342 is 24344402.

It is a super-2 number, since 2×20444342² = 835942239625928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3938 + ... + 7509.

It is an arithmetic number, because the mean of its divisors is an integer number (2060640).

Almost surely, 2^20444342 is an apocalyptic number.

20444342 is a deficient number, since it is larger than the sum of its proper divisors (12525898).

20444342 is a wasteful number, since it uses less digits than its factorization.

20444342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11515.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 20444342 is about 4521.5419936124. The cubic root of 20444342 is about 273.4372719258.

Adding to 20444342 its reverse (24344402), we get a palindrome (44788744).

The spelling of 20444342 in words is "twenty million, four hundred forty-four thousand, three hundred forty-two".