78327080 has 128 divisors (see below), whose sum is σ = 202245120. Its totient is φ = 27095040.

The previous prime is 78327079. The next prime is 78327083. The reversal of 78327080 is 8072387.

It is a happy number.

It is a super-2 number, since 2×78327080² = 12270262922652800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78327080.

It is not an unprimeable number, because it can be changed into a prime (78327083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 693104 + ... + 693216.

It is an arithmetic number, because the mean of its divisors is an integer number (1580040).

Almost surely, 2^78327080 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 78327080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101122560).

78327080 is an abundant number, since it is smaller than the sum of its proper divisors (123918040).

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

78327080 is a wasteful number, since it uses less digits than its factorization.

78327080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 78327080 is about 8850.2587532795. The cubic root of 78327080 is about 427.8622580602.

The spelling of 78327080 in words is "seventy-eight million, three hundred twenty-seven thousand, eighty".