77729852 has 6 divisors (see below), whose sum is σ = 136027248. Its totient is φ = 38864924.

The previous prime is 77729837. The next prime is 77729863. The reversal of 77729852 is 25892777.

It is a junction number, because it is equal to n+sod(n) for n = 77729797 and 77729806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9716228 + ... + 9716235.

It is an arithmetic number, because the mean of its divisors is an integer number (22671208).

Almost surely, 2^77729852 is an apocalyptic number.

It is an amenable number.

77729852 is a deficient number, since it is larger than the sum of its proper divisors (58297396).

77729852 is a wasteful number, since it uses less digits than its factorization.

77729852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19432467 (or 19432465 counting only the distinct ones).

The product of its digits is 493920, while the sum is 47.

The square root of 77729852 is about 8816.4534819847. The cubic root of 77729852 is about 426.7720282874.

The spelling of 77729852 in words is "seventy-seven million, seven hundred twenty-nine thousand, eight hundred fifty-two".