840028875 has 32 divisors (see below), whose sum is σ = 1597499904. Its totient is φ = 384012000.

The previous prime is 840028867. The next prime is 840028879. The reversal of 840028875 is 578820048.

It is not a de Polignac number, because 840028875 - 2³ = 840028867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840028879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157381 + ... + 162630.

It is an arithmetic number, because the mean of its divisors is an integer number (49921872).

Almost surely, 2^840028875 is an apocalyptic number.

840028875 is a deficient number, since it is larger than the sum of its proper divisors (757471029).

840028875 is a wasteful number, since it uses less digits than its factorization.

840028875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320036 (or 320026 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 42.

The square root of 840028875 is about 28983.2516291737. The cubic root of 840028875 is about 943.5496073215.

The spelling of 840028875 in words is "eight hundred forty million, twenty-eight thousand, eight hundred seventy-five".