78307482 has 64 divisors (see below), whose sum is σ = 178536960. Its totient is φ = 22680000.

The previous prime is 78307459. The next prime is 78307483. The reversal of 78307482 is 28470387.

It is a super-2 number, since 2×78307482² = 12264123474360648, 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 78307482.

It is not an unprimeable number, because it can be changed into a prime (78307483) 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, 311857 + ... + 312107.

It is an arithmetic number, because the mean of its divisors is an integer number (2789640).

Almost surely, 2^78307482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78307482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89268480).

78307482 is an abundant number, since it is smaller than the sum of its proper divisors (100229478).

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

78307482 is a wasteful number, since it uses less digits than its factorization.

78307482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 78307482 is about 8849.1514847470. The cubic root of 78307482 is about 427.8265703432.

The spelling of 78307482 in words is "seventy-eight million, three hundred seven thousand, four hundred eighty-two".