840288032 has 24 divisors (see below), whose sum is σ = 1662900876. Its totient is φ = 417964032.

The previous prime is 840288017. The next prime is 840288037. The reversal of 840288032 is 230882048.

It can be written as a sum of positive squares in 2 ways, for example, as 731377936 + 108910096 = 27044^2 + 10436^2 .

It is a junction number, because it is equal to n+sod(n) for n = 840287983 and 840288001.

It is not an unprimeable number, because it can be changed into a prime (840288037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61853 + ... + 74204.

Almost surely, 2^840288032 is an apocalyptic number.

It is an amenable number.

840288032 is a deficient number, since it is larger than the sum of its proper divisors (822612844).

840288032 is a wasteful number, since it uses less digits than its factorization.

840288032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136260 (or 136252 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 840288032 is about 28987.7220905679. The cubic root of 840288032 is about 943.6466287259.

The spelling of 840288032 in words is "eight hundred forty million, two hundred eighty-eight thousand, thirty-two".