78886544 has 40 divisors (see below), whose sum is σ = 167280960. Its totient is φ = 35740800.

The previous prime is 78886487. The next prime is 78886547. The reversal of 78886544 is 44568887.

It is a junction number, because it is equal to n+sod(n) for n = 78886492 and 78886501.

It is not an unprimeable number, because it can be changed into a prime (78886547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76754 + ... + 77774.

It is an arithmetic number, because the mean of its divisors is an integer number (4182024).

Almost surely, 2^78886544 is an apocalyptic number.

It is an amenable number.

78886544 is an abundant number, since it is smaller than the sum of its proper divisors (88394416).

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

78886544 is a wasteful number, since it uses less digits than its factorization.

78886544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479 (or 1473 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 50.

The square root of 78886544 is about 8881.8097255008. The cubic root of 78886544 is about 428.8785343366.

The spelling of 78886544 in words is "seventy-eight million, eight hundred eighty-six thousand, five hundred forty-four".