78111088 has 40 divisors (see below), whose sum is σ = 165703680. Its totient is φ = 35375040.

The previous prime is 78111083. The next prime is 78111101. The reversal of 78111088 is 88011187.

It is a super-2 number, since 2×78111088² = 12202684137087488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78111083) 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 7 ways as a sum of consecutive naturals, for example, 60433 + ... + 61711.

It is an arithmetic number, because the mean of its divisors is an integer number (4142592).

Almost surely, 2^78111088 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 78111088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82851840).

78111088 is an abundant number, since it is smaller than the sum of its proper divisors (87592592).

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

78111088 is a wasteful number, since it uses less digits than its factorization.

78111088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645 (or 1639 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 34.

The square root of 78111088 is about 8838.0477482304. The cubic root of 78111088 is about 427.4686100318.

Subtracting 78111088 from its reverse (88011187), we obtain a palindrome (9900099).

The spelling of 78111088 in words is "seventy-eight million, one hundred eleven thousand, eighty-eight".