820946852 has 12 divisors (see below), whose sum is σ = 1567262256. Its totient is φ = 373157640.

The previous prime is 820946821. The next prime is 820946857. The reversal of 820946852 is 258649028.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 18657883 = 820946852 / (8 + 2 + 0 + 9 + 4 + 6 + 8 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (820946857) 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, 9328898 + ... + 9328985.

It is an arithmetic number, because the mean of its divisors is an integer number (130605188).

Almost surely, 2^820946852 is an apocalyptic number.

It is an amenable number.

820946852 is a deficient number, since it is larger than the sum of its proper divisors (746315404).

820946852 is a wasteful number, since it uses less digits than its factorization.

820946852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18657898 (or 18657896 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 820946852 is about 28652.1701097840. The cubic root of 820946852 is about 936.3502855910.

The spelling of 820946852 in words is "eight hundred twenty million, nine hundred forty-six thousand, eight hundred fifty-two".