77932244 has 12 divisors (see below), whose sum is σ = 146872404. Its totient is φ = 35968704.

The previous prime is 77932241. The next prime is 77932289. The reversal of 77932244 is 44223977.

It can be written as a sum of positive squares in 2 ways, for example, as 8410000 + 69522244 = 2900^2 + 8338^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77932198 and 77932207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77932241) 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, 749297 + ... + 749400.

It is an arithmetic number, because the mean of its divisors is an integer number (12239367).

Almost surely, 2^77932244 is an apocalyptic number.

It is an amenable number.

77932244 is a deficient number, since it is larger than the sum of its proper divisors (68940160).

77932244 is a wasteful number, since it uses less digits than its factorization.

77932244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498714 (or 1498712 counting only the distinct ones).

The product of its digits is 84672, while the sum is 38.

The square root of 77932244 is about 8827.9241047938. The cubic root of 77932244 is about 427.1421151237.

The spelling of 77932244 in words is "seventy-seven million, nine hundred thirty-two thousand, two hundred forty-four".