811730748 has 12 divisors (see below), whose sum is σ = 1894038440. Its totient is φ = 270576912.

The previous prime is 811730747. The next prime is 811730779. The reversal of 811730748 is 847037118.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811730747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33822103 + ... + 33822126.

Almost surely, 2^811730748 is an apocalyptic number.

It is an amenable number.

811730748 is an abundant number, since it is smaller than the sum of its proper divisors (1082307692).

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

811730748 is a wasteful number, since it uses less digits than its factorization.

811730748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67644236 (or 67644234 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 811730748 is about 28490.8888594231. Note that the first 4 decimals coincide. The cubic root of 811730748 is about 932.8332098929.

The spelling of 811730748 in words is "eight hundred eleven million, seven hundred thirty thousand, seven hundred forty-eight".