835428240 has 60 divisors (see below), whose sum is σ = 2805648924. Its totient is φ = 222780672.

The previous prime is 835428221. The next prime is 835428247. The reversal of 835428240 is 42824538.

It can be written as a sum of positive squares in 2 ways, for example, as 539725824 + 295702416 = 23232^2 + 17196^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 835428195 and 835428204.

It is not an unprimeable number, because it can be changed into a prime (835428247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 579439 + ... + 580878.

Almost surely, 2^835428240 is an apocalyptic number.

835428240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

835428240 is an abundant number, since it is smaller than the sum of its proper divisors (1970220684).

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

835428240 is a wasteful number, since it uses less digits than its factorization.

835428240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160336 (or 1160327 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 835428240 is about 28903.7755319266. The cubic root of 835428240 is about 941.8239220845.

The spelling of 835428240 in words is "eight hundred thirty-five million, four hundred twenty-eight thousand, two hundred forty".