78324148 has 18 divisors (see below), whose sum is σ = 159445986. Its totient is φ = 33567408.

The previous prime is 78324143. The next prime is 78324163. The reversal of 78324148 is 84142387.

It can be written as a sum of positive squares in only one way, i.e., 74857104 + 3467044 = 8652^2 + 1862^2 .

It is a super-2 number, since 2×78324148² = 12269344319851808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78324143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 199611 + ... + 200002.

Almost surely, 2^78324148 is an apocalyptic number.

It is an amenable number.

78324148 is an abundant number, since it is smaller than the sum of its proper divisors (81121838).

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

78324148 is a wasteful number, since it uses less digits than its factorization.

78324148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399631 (or 399622 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 78324148 is about 8850.0931068549. The cubic root of 78324148 is about 427.8569193029.

The spelling of 78324148 in words is "seventy-eight million, three hundred twenty-four thousand, one hundred forty-eight".