232420221428 has 12 divisors (see below), whose sum is σ = 407447712672. Its totient is φ = 116006589240.

The previous prime is 232420221413. The next prime is 232420221431. The reversal of 232420221428 is 824122024232.

It is a happy number.

232420221428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 232420221394 and 232420221403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50877800 + ... + 50882367.

It is an arithmetic number, because the mean of its divisors is an integer number (33953976056).

Almost surely, 2^232420221428 is an apocalyptic number.

It is an amenable number.

232420221428 is a deficient number, since it is larger than the sum of its proper divisors (175027491244).

232420221428 is a wasteful number, since it uses less digits than its factorization.

232420221428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101760742 (or 101760740 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The spelling of 232420221428 in words is "two hundred thirty-two billion, four hundred twenty million, two hundred twenty-one thousand, four hundred twenty-eight".