78478122 has 8 divisors (see below), whose sum is σ = 156956256. Its totient is φ = 26159372.

The previous prime is 78478097. The next prime is 78478133. The reversal of 78478122 is 22187487.

It is a sphenic number, since it is the product of 3 distinct primes.

78478122 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6539838 + ... + 6539849.

It is an arithmetic number, because the mean of its divisors is an integer number (19619532).

Almost surely, 2^78478122 is an apocalyptic number.

78478122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78478122 is a wasteful number, since it uses less digits than its factorization.

78478122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13079692.

The product of its digits is 50176, while the sum is 39.

The square root of 78478122 is about 8858.7878403312. The cubic root of 78478122 is about 428.1371041528.

The spelling of 78478122 in words is "seventy-eight million, four hundred seventy-eight thousand, one hundred twenty-two".