78838000 has 40 divisors (see below), whose sum is σ = 190635120. Its totient is φ = 31534400.

The previous prime is 78837947. The next prime is 78838013. The reversal of 78838000 is 83887.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 17710 + ... + 21709.

It is an arithmetic number, because the mean of its divisors is an integer number (4765878).

Almost surely, 2^78838000 is an apocalyptic number.

It is an amenable number.

78838000 is an abundant number, since it is smaller than the sum of its proper divisors (111797120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78838000 is a wasteful number, since it uses less digits than its factorization.

78838000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39442 (or 39426 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 78838000 is about 8879.0765285586. The cubic root of 78838000 is about 428.7905440385.

The spelling of 78838000 in words is "seventy-eight million, eight hundred thirty-eight thousand".