20234434402 has 32 divisors (see below), whose sum is σ = 37523469312. Its totient is φ = 7968919104.

The previous prime is 20234434387. The next prime is 20234434447. The reversal of 20234434402 is 20443443202.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208693 + ... + 289864.

It is an arithmetic number, because the mean of its divisors is an integer number (1172608416).

Almost surely, 2^20234434402 is an apocalyptic number.

20234434402 is a deficient number, since it is larger than the sum of its proper divisors (17289034910).

20234434402 is a wasteful number, since it uses less digits than its factorization.

20234434402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498802.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 20234434402 its reverse (20443443202), we get a palindrome (40677877604).

The spelling of 20234434402 in words is "twenty billion, two hundred thirty-four million, four hundred thirty-four thousand, four hundred two".