835640352 has 72 divisors (see below), whose sum is σ = 2434346460. Its totient is φ = 271749120.

The previous prime is 835640303. The next prime is 835640357. The reversal of 835640352 is 253046538.

It is a happy number.

835640352 is a `hidden beast` number, since 8 + 3 + 5 + 640 + 3 + 5 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 834285456 + 1354896 = 28884^2 + 1164^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is not an unprimeable number, because it can be changed into a prime (835640357) 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, 23577 + ... + 47192.

Almost surely, 2^835640352 is an apocalyptic number.

835640352 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

835640352 is an abundant number, since it is smaller than the sum of its proper divisors (1598706108).

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

835640352 is a wasteful number, since it uses less digits than its factorization.

835640352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70826 (or 70815 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 835640352 is about 28907.4445774787. Note that the first 3 decimals coincide. The cubic root of 835640352 is about 941.9036238237.

The spelling of 835640352 in words is "eight hundred thirty-five million, six hundred forty thousand, three hundred fifty-two".