78455488 has 28 divisors (see below), whose sum is σ = 155968192. Its totient is φ = 39156480.

The previous prime is 78455483. The next prime is 78455491. The reversal of 78455488 is 88455487.

Its product of digits (1433600) is a multiple of the sum of its prime factors (2240).

It is not an unprimeable number, because it can be changed into a prime (78455483) 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, 62806 + ... + 64042.

Almost surely, 2^78455488 is an apocalyptic number.

It is an amenable number.

78455488 is a deficient number, since it is larger than the sum of its proper divisors (77512704).

78455488 is a wasteful number, since it uses less digits than its factorization.

78455488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240 (or 2230 counting only the distinct ones).

The product of its digits is 1433600, while the sum is 49.

The square root of 78455488 is about 8857.5102596610. The cubic root of 78455488 is about 428.0959402941.

Subtracting 78455488 from its reverse (88455487), we obtain a palindrome (9999999).

The spelling of 78455488 in words is "seventy-eight million, four hundred fifty-five thousand, four hundred eighty-eight".