20442310 has 24 divisors (see below), whose sum is σ = 42804720. Its totient is φ = 7008624.

The previous prime is 20442293. The next prime is 20442349. The reversal of 20442310 is 1324402.

It is a super-2 number, since 2×20442310² = 835776076272200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20370 + ... + 21349.

It is an arithmetic number, because the mean of its divisors is an integer number (1783530).

Almost surely, 2^20442310 is an apocalyptic number.

20442310 is an abundant number, since it is smaller than the sum of its proper divisors (22362410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20442310 is a wasteful number, since it uses less digits than its factorization.

20442310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41740 (or 41733 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20442310 is about 4521.3172859245. The cubic root of 20442310 is about 273.4282124845.

Adding to 20442310 its reverse (1324402), we get a palindrome (21766712).

The spelling of 20442310 in words is "twenty million, four hundred forty-two thousand, three hundred ten".