20113434 has 40 divisors (see below), whose sum is σ = 49170528. Its totient is φ = 6094440.

The previous prime is 20113433. The next prime is 20113453. The reversal of 20113434 is 43431102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20113433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3862 + ... + 7425.

Almost surely, 2^20113434 is an apocalyptic number.

20113434 is an abundant number, since it is smaller than the sum of its proper divisors (29057094).

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

20113434 is a wasteful number, since it uses less digits than its factorization.

20113434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11312 (or 11303 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20113434 is about 4484.8003300036. The cubic root of 20113434 is about 271.9539732529.

Adding to 20113434 its reverse (43431102), we get a palindrome (63544536).

It can be divided in two parts, 2011 and 3434, that added together give a palindrome (5445).

The spelling of 20113434 in words is "twenty million, one hundred thirteen thousand, four hundred thirty-four".