78072648 has 16 divisors (see below), whose sum is σ = 195181680. Its totient is φ = 26024208.

The previous prime is 78072647. The next prime is 78072671. The reversal of 78072648 is 84627087.

It is not an unprimeable number, because it can be changed into a prime (78072647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1626490 + ... + 1626537.

It is an arithmetic number, because the mean of its divisors is an integer number (12198855).

Almost surely, 2^78072648 is an apocalyptic number.

It is an amenable number.

78072648 is an abundant number, since it is smaller than the sum of its proper divisors (117109032).

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

78072648 is a wasteful number, since it uses less digits than its factorization.

78072648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253036 (or 3253032 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 78072648 is about 8835.8727922034. The cubic root of 78072648 is about 427.3984766272.

The spelling of 78072648 in words is "seventy-eight million, seventy-two thousand, six hundred forty-eight".