78480642 has 16 divisors (see below), whose sum is σ = 160790112. Its totient is φ = 25522080.

The previous prime is 78480637. The next prime is 78480673. The reversal of 78480642 is 24608487.

It is a super-2 number, since 2×78480642² = 12318422337464328, 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 78480642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159268 + ... + 159759.

It is an arithmetic number, because the mean of its divisors is an integer number (10049382).

Almost surely, 2^78480642 is an apocalyptic number.

78480642 is an abundant number, since it is smaller than the sum of its proper divisors (82309470).

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

78480642 is a wasteful number, since it uses less digits than its factorization.

78480642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319073.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 78480642 is about 8858.9300708381. The cubic root of 78480642 is about 428.1416867206.

The spelling of 78480642 in words is "seventy-eight million, four hundred eighty thousand, six hundred forty-two".