20401323232 has 24 divisors (see below), whose sum is σ = 40182949800. Its totient is φ = 10196129664.

The previous prime is 20401323221. The next prime is 20401323253. The reversal of 20401323232 is 23232310402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67882 + ... + 213097.

It is an arithmetic number, because the mean of its divisors is an integer number (1674289575).

Almost surely, 2^20401323232 is an apocalyptic number.

It is an amenable number.

20401323232 is a deficient number, since it is larger than the sum of its proper divisors (19781626568).

20401323232 is a wasteful number, since it uses less digits than its factorization.

20401323232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283258 (or 283250 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20401323232 its reverse (23232310402), we get a palindrome (43633633634).

The spelling of 20401323232 in words is "twenty billion, four hundred one million, three hundred twenty-three thousand, two hundred thirty-two".