834255640 has 32 divisors (see below), whose sum is σ = 1917017280. Its totient is φ = 326601472.

The previous prime is 834255571. The next prime is 834255647. The reversal of 834255640 is 46552438.

It is a self number, because there is not a number n which added to its sum of digits gives 834255640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (834255647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219997 + ... + 223756.

It is an arithmetic number, because the mean of its divisors is an integer number (59906790).

Almost surely, 2^834255640 is an apocalyptic number.

It is an amenable number.

834255640 is an abundant number, since it is smaller than the sum of its proper divisors (1082761640).

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

834255640 is a wasteful number, since it uses less digits than its factorization.

834255640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443811 (or 443807 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 834255640 is about 28883.4838618890. The cubic root of 834255640 is about 941.3830704022.

The spelling of 834255640 in words is "eight hundred thirty-four million, two hundred fifty-five thousand, six hundred forty".