78618960 has 240 divisors, whose sum is σ = 318015360. Its totient is φ = 17003520.

The previous prime is 78618937. The next prime is 78618961. The reversal of 78618960 is 6981687.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78618961) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95350 + ... + 96170.

It is an arithmetic number, because the mean of its divisors is an integer number (1325064).

Almost surely, 2^78618960 is an apocalyptic number.

78618960 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78618960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159007680).

78618960 is an abundant number, since it is smaller than the sum of its proper divisors (239396400).

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

78618960 is a wasteful number, since it uses less digits than its factorization.

78618960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 78618960 is about 8866.7333330827. The cubic root of 78618960 is about 428.3930648261.

The spelling of 78618960 in words is "seventy-eight million, six hundred eighteen thousand, nine hundred sixty".