840632432 has 20 divisors (see below), whose sum is σ = 1629445560. Its totient is φ = 420130368.

The previous prime is 840632357. The next prime is 840632437. The reversal of 840632432 is 234236048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840632437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30278 + ... + 50970.

It is an arithmetic number, because the mean of its divisors is an integer number (81472278).

Almost surely, 2^840632432 is an apocalyptic number.

It is an amenable number.

840632432 is a deficient number, since it is larger than the sum of its proper divisors (788813128).

840632432 is a wasteful number, since it uses less digits than its factorization.

840632432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23240 (or 23234 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 840632432 is about 28993.6619280835. The cubic root of 840632432 is about 943.7755319496.

The spelling of 840632432 in words is "eight hundred forty million, six hundred thirty-two thousand, four hundred thirty-two".