77819852 has 24 divisors (see below), whose sum is σ = 152023872. Its totient is φ = 34549200.

The previous prime is 77819849. The next prime is 77819867. The reversal of 77819852 is 25891877.

It is a junction number, because it is equal to n+sod(n) for n = 77819797 and 77819806.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18674 + ... + 22457.

It is an arithmetic number, because the mean of its divisors is an integer number (6334328).

Almost surely, 2^77819852 is an apocalyptic number.

It is an amenable number.

77819852 is a deficient number, since it is larger than the sum of its proper divisors (74204020).

77819852 is a wasteful number, since it uses less digits than its factorization.

77819852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41189 (or 41187 counting only the distinct ones).

The product of its digits is 282240, while the sum is 47.

The square root of 77819852 is about 8821.5560985577. The cubic root of 77819852 is about 426.9366783194.

The spelling of 77819852 in words is "seventy-seven million, eight hundred nineteen thousand, eight hundred fifty-two".