805306356 has 36 divisors (see below), whose sum is σ = 2036629504. Its totient is φ = 268304400.

The previous prime is 805306349. The next prime is 805306357. The reversal of 805306356 is 653603508.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 805306356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805306357) 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, 94221 + ... + 102411.

Almost surely, 2^805306356 is an apocalyptic number.

It is an amenable number.

805306356 is an abundant number, since it is smaller than the sum of its proper divisors (1231323148).

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

805306356 is a wasteful number, since it uses less digits than its factorization.

805306356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10932 (or 10927 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 805306356 is about 28377.9202197765. The cubic root of 805306356 is about 930.3657389089.

The spelling of 805306356 in words is "eight hundred five million, three hundred six thousand, three hundred fifty-six".