840201680 has 40 divisors (see below), whose sum is σ = 2016489984. Its totient is φ = 325238400.

The previous prime is 840201623. The next prime is 840201701. The reversal of 840201680 is 86102048.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 166916 + ... + 171875.

Almost surely, 2^840201680 is an apocalyptic number.

840201680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

840201680 is an abundant number, since it is smaller than the sum of its proper divisors (1176288304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

840201680 is a wasteful number, since it uses less digits than its factorization.

840201680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338835 (or 338829 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 840201680 is about 28986.2325941127. The cubic root of 840201680 is about 943.6143030780.

The spelling of 840201680 in words is "eight hundred forty million, two hundred one thousand, six hundred eighty".