832740640 has 24 divisors (see below), whose sum is σ = 1967350140. Its totient is φ = 333096192.

The previous prime is 832740617. The next prime is 832740677. The reversal of 832740640 is 46047238.

It can be written as a sum of positive squares in 2 ways, for example, as 812706064 + 20034576 = 28508^2 + 4476^2 .

It is a junction number, because it is equal to n+sod(n) for n = 832740596 and 832740605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2602155 + ... + 2602474.

Almost surely, 2^832740640 is an apocalyptic number.

832740640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

832740640 is an abundant number, since it is smaller than the sum of its proper divisors (1134609500).

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

832740640 is a wasteful number, since it uses less digits than its factorization.

832740640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204644 (or 5204636 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 832740640 is about 28857.2458838331. The cubic root of 832740640 is about 940.8128776563.

Adding to 832740640 its reverse (46047238), we get a palindrome (878787878).

The spelling of 832740640 in words is "eight hundred thirty-two million, seven hundred forty thousand, six hundred forty".