78936460 has 48 divisors (see below), whose sum is σ = 174234816. Its totient is φ = 29981952.

The previous prime is 78936427. The next prime is 78936461. The reversal of 78936460 is 6463987.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (78936461) 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 15 ways as a sum of consecutive naturals, for example, 71674 + ... + 72766.

It is an arithmetic number, because the mean of its divisors is an integer number (3629892).

Almost surely, 2^78936460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78936460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87117408).

78936460 is an abundant number, since it is smaller than the sum of its proper divisors (95298356).

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

78936460 is a wasteful number, since it uses less digits than its factorization.

78936460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282 (or 1280 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 78936460 is about 8884.6192940384. The cubic root of 78936460 is about 428.9689738720.

It can be divided in two parts, 789 and 36460, that added together give a square (37249 = 193²).

The spelling of 78936460 in words is "seventy-eight million, nine hundred thirty-six thousand, four hundred sixty".