20013234 has 32 divisors (see below), whose sum is σ = 40896576. Its totient is φ = 6528000.

The previous prime is 20013223. The next prime is 20013239. The reversal of 20013234 is 43231002.

It is not an unprimeable number, because it can be changed into a prime (20013239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79609 + ... + 79859.

It is an arithmetic number, because the mean of its divisors is an integer number (1278018).

Almost surely, 2^20013234 is an apocalyptic number.

20013234 is an abundant number, since it is smaller than the sum of its proper divisors (20883342).

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

20013234 is a wasteful number, since it uses less digits than its factorization.

20013234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20013234 is about 4473.6153164974. The cubic root of 20013234 is about 271.5016194634.

Adding to 20013234 its reverse (43231002), we get a palindrome (63244236).

The spelling of 20013234 in words is "twenty million, thirteen thousand, two hundred thirty-four".