78075750 has 64 divisors (see below), whose sum is σ = 205171200. Its totient is φ = 19720800.

The previous prime is 78075721. The next prime is 78075761. The reversal of 78075750 is 5757087.

It is a junction number, because it is equal to n+sod(n) for n = 78075699 and 78075708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11511 + ... + 16989.

It is an arithmetic number, because the mean of its divisors is an integer number (3205800).

Almost surely, 2^78075750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78075750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102585600).

78075750 is an abundant number, since it is smaller than the sum of its proper divisors (127095450).

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

78075750 is a wasteful number, since it uses less digits than its factorization.

78075750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5518 (or 5508 counting only the distinct ones).

The product of its (nonzero) digits is 68600, while the sum is 39.

The square root of 78075750 is about 8836.0483249018. The cubic root of 78075750 is about 427.4041370497.

The spelling of 78075750 in words is "seventy-eight million, seventy-five thousand, seven hundred fifty".