20413442 has 16 divisors (see below), whose sum is σ = 35439360. Its totient is φ = 8637408.

The previous prime is 20413441. The next prime is 20413451. The reversal of 20413442 is 24431402.

It is a super-2 number, since 2×20413442² = 833417228574728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20413441) 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, 8123 + ... + 10334.

It is an arithmetic number, because the mean of its divisors is an integer number (2214960).

Almost surely, 2^20413442 is an apocalyptic number.

20413442 is a deficient number, since it is larger than the sum of its proper divisors (15025918).

20413442 is a wasteful number, since it uses less digits than its factorization.

20413442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18545.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 20413442 is about 4518.1237256189. The cubic root of 20413442 is about 273.2994428865.

Adding to 20413442 its reverse (24431402), we get a palindrome (44844844).

The spelling of 20413442 in words is "twenty million, four hundred thirteen thousand, four hundred forty-two".