78528207 has 8 divisors (see below), whose sum is σ = 105741360. Its totient is φ = 51833600.

The previous prime is 78528199. The next prime is 78528251. The reversal of 78528207 is 70282587.

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

It is a cyclic number.

It is not a de Polignac number, because 78528207 - 2³ = 78528199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78521207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129282 + ... + 129887.

It is an arithmetic number, because the mean of its divisors is an integer number (13217670).

Almost surely, 2^78528207 is an apocalyptic number.

78528207 is a deficient number, since it is larger than the sum of its proper divisors (27213153).

78528207 is a wasteful number, since it uses less digits than its factorization.

78528207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259273.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 78528207 is about 8861.6142434660. The cubic root of 78528207 is about 428.2281642946.

The spelling of 78528207 in words is "seventy-eight million, five hundred twenty-eight thousand, two hundred seven".