232781780428 has 12 divisors (see below), whose sum is σ = 410973144120. Its totient is φ = 115360882112.

The previous prime is 232781780401. The next prime is 232781780437. The reversal of 232781780428 is 824087187232.

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 3 ways as a sum of consecutive naturals, for example, 257501518 + ... + 257502421.

It is an arithmetic number, because the mean of its divisors is an integer number (34247762010).

Almost surely, 2^232781780428 is an apocalyptic number.

It is an amenable number.

232781780428 is a deficient number, since it is larger than the sum of its proper divisors (178191363692).

232781780428 is a wasteful number, since it uses less digits than its factorization.

232781780428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515004056 (or 515004054 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 52.

The spelling of 232781780428 in words is "two hundred thirty-two billion, seven hundred eighty-one million, seven hundred eighty thousand, four hundred twenty-eight".