77938036 has 24 divisors (see below), whose sum is σ = 150030720. Its totient is φ = 35423960.

The previous prime is 77938031. The next prime is 77938073. The reversal of 77938036 is 63083977.

It is a junction number, because it is equal to n+sod(n) for n = 77937983 and 77938001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77938031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996 + ... + 12643.

It is an arithmetic number, because the mean of its divisors is an integer number (6251280).

Almost surely, 2^77938036 is an apocalyptic number.

It is an amenable number.

77938036 is a deficient number, since it is larger than the sum of its proper divisors (72092684).

77938036 is a wasteful number, since it uses less digits than its factorization.

77938036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14676 (or 14652 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 77938036 is about 8828.2521486419. The cubic root of 77938036 is about 427.1526967337.

The spelling of 77938036 in words is "seventy-seven million, nine hundred thirty-eight thousand, thirty-six".