78324009 has 8 divisors (see below), whose sum is σ = 104666400. Its totient is φ = 52098816.

The previous prime is 78324007. The next prime is 78324013. The reversal of 78324009 is 90042387.

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

It is not a de Polignac number, because 78324009 - 2¹ = 78324007 is a prime.

It is a super-2 number, since 2×78324009² = 12269300771664162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78324007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27727 + ... + 30420.

It is an arithmetic number, because the mean of its divisors is an integer number (13083300).

Almost surely, 2^78324009 is an apocalyptic number.

It is an amenable number.

78324009 is a deficient number, since it is larger than the sum of its proper divisors (26342391).

78324009 is a wasteful number, since it uses less digits than its factorization.

78324009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58599.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 78324009 is about 8850.0852538267. The cubic root of 78324009 is about 427.8566662003.

The spelling of 78324009 in words is "seventy-eight million, three hundred twenty-four thousand, nine".