78032805 has 16 divisors (see below), whose sum is σ = 132197184. Its totient is φ = 39169280.

The previous prime is 78032789. The next prime is 78032807. The reversal of 78032805 is 50823087.

It is not a de Polignac number, because 78032805 - 2⁴ = 78032789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78032807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152751 + ... + 153260.

It is an arithmetic number, because the mean of its divisors is an integer number (8262324).

Almost surely, 2^78032805 is an apocalyptic number.

It is an amenable number.

78032805 is a deficient number, since it is larger than the sum of its proper divisors (54164379).

78032805 is a wasteful number, since it uses less digits than its factorization.

78032805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306036.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 78032805 is about 8833.6178884985. The cubic root of 78032805 is about 427.3257591624.

The spelling of 78032805 in words is "seventy-eight million, thirty-two thousand, eight hundred five".