20043402 has 16 divisors (see below), whose sum is σ = 40171680. Its totient is φ = 6666992.

The previous prime is 20043343. The next prime is 20043403. The reversal of 20043402 is 20434002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20043403) 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, 228 + ... + 6335.

It is an arithmetic number, because the mean of its divisors is an integer number (2510730).

Almost surely, 2^20043402 is an apocalyptic number.

20043402 is an abundant number, since it is smaller than the sum of its proper divisors (20128278).

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

20043402 is a wasteful number, since it uses less digits than its factorization.

20043402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7077.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20043402 is about 4476.9858163724. The cubic root of 20043402 is about 271.6379717184.

Adding to 20043402 its reverse (20434002), we get a palindrome (40477404).

The spelling of 20043402 in words is "twenty million, forty-three thousand, four hundred two".