78531148 has 12 divisors (see below), whose sum is σ = 137527992. Its totient is φ = 39237440.

The previous prime is 78531127. The next prime is 78531151. The reversal of 78531148 is 84113587.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36 + ... + 12532.

It is an arithmetic number, because the mean of its divisors is an integer number (11460666).

Almost surely, 2^78531148 is an apocalyptic number.

It is an amenable number.

78531148 is a deficient number, since it is larger than the sum of its proper divisors (58996844).

78531148 is a wasteful number, since it uses less digits than its factorization.

78531148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14072 (or 14070 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 78531148 is about 8861.7801823336. The cubic root of 78531148 is about 428.2335101585.

The spelling of 78531148 in words is "seventy-eight million, five hundred thirty-one thousand, one hundred forty-eight".