78275148 has 36 divisors (see below), whose sum is σ = 212462712. Its totient is φ = 22364160.

The previous prime is 78275137. The next prime is 78275149. The reversal of 78275148 is 84157287.

It is a super-2 number, since 2×78275148² = 12253997588843808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (78275149) 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 11 ways as a sum of consecutive naturals, for example, 65973 + ... + 67148.

It is an arithmetic number, because the mean of its divisors is an integer number (5901742).

Almost surely, 2^78275148 is an apocalyptic number.

It is an amenable number.

78275148 is an abundant number, since it is smaller than the sum of its proper divisors (134187564).

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

78275148 is a wasteful number, since it uses less digits than its factorization.

78275148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133142 (or 133133 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 78275148 is about 8847.3243412910. The cubic root of 78275148 is about 427.7676775087.

The spelling of 78275148 in words is "seventy-eight million, two hundred seventy-five thousand, one hundred forty-eight".