78881130 has 48 divisors (see below), whose sum is σ = 210102984. Its totient is φ = 20520960.

The previous prime is 78881123. The next prime is 78881137. The reversal of 78881130 is 3118887.

It is an interprime number because it is at equal distance from previous prime (78881123) and next prime (78881137).

It can be written as a sum of positive squares in 4 ways, for example, as 22496049 + 56385081 = 4743^2 + 7509^2 .

It is not an unprimeable number, because it can be changed into a prime (78881137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6999 + ... + 14378.

Almost surely, 2^78881130 is an apocalyptic number.

78881130 is an abundant number, since it is smaller than the sum of its proper divisors (131221854).

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

78881130 is a wasteful number, since it uses less digits than its factorization.

78881130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21431 (or 21428 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 78881130 is about 8881.5049400425. The cubic root of 78881130 is about 428.8687227710.

It can be divided in two parts, 788 and 81130, that added together give a palindrome (81918).

The spelling of 78881130 in words is "seventy-eight million, eight hundred eighty-one thousand, one hundred thirty".