840268538 has 8 divisors (see below), whose sum is σ = 1287220032. Its totient is φ = 411195196.

The previous prime is 840268531. The next prime is 840268543. The reversal of 840268538 is 835862048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (840268531) by changing a digit.

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, 4469420 + ... + 4469607.

It is an arithmetic number, because the mean of its divisors is an integer number (160902504).

Almost surely, 2^840268538 is an apocalyptic number.

840268538 is a deficient number, since it is larger than the sum of its proper divisors (446951494).

840268538 is a wasteful number, since it uses less digits than its factorization.

840268538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8939076.

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 840268538 is about 28987.3858428110. The cubic root of 840268538 is about 943.6393313909.

The spelling of 840268538 in words is "eight hundred forty million, two hundred sixty-eight thousand, five hundred thirty-eight".