78893028 has 60 divisors (see below), whose sum is σ = 211848252. Its totient is φ = 25583040.

The previous prime is 78893027. The next prime is 78893041. The reversal of 78893028 is 82039887.

It can be written as a sum of positive squares in 2 ways, for example, as 46539684 + 32353344 = 6822^2 + 5688^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78893027) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8698 + ... + 15278.

Almost surely, 2^78893028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78893028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105924126).

78893028 is an abundant number, since it is smaller than the sum of its proper divisors (132955224).

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

78893028 is a wasteful number, since it uses less digits than its factorization.

78893028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6634 (or 6623 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 78893028 is about 8882.1747337012. The cubic root of 78893028 is about 428.8902844277.

The spelling of 78893028 in words is "seventy-eight million, eight hundred ninety-three thousand, twenty-eight".