78195288 has 16 divisors (see below), whose sum is σ = 195488280. Its totient is φ = 26065088.

The previous prime is 78195287. The next prime is 78195329. The reversal of 78195288 is 88259187.

It is a super-2 number, since 2×78195288² = 12229006130805888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78195283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1629045 + ... + 1629092.

Almost surely, 2^78195288 is an apocalyptic number.

It is an amenable number.

78195288 is an abundant number, since it is smaller than the sum of its proper divisors (117292992).

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

78195288 is a wasteful number, since it uses less digits than its factorization.

78195288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258146 (or 3258142 counting only the distinct ones).

The product of its digits is 322560, while the sum is 48.

The square root of 78195288 is about 8842.8099606403. The cubic root of 78195288 is about 427.6221517494.

It can be divided in two parts, 781 and 95288, that added together give a palindrome (96069).

The spelling of 78195288 in words is "seventy-eight million, one hundred ninety-five thousand, two hundred eighty-eight".