78001305 has 16 divisors (see below), whose sum is σ = 125006784. Its totient is φ = 41532480.

The previous prime is 78001283. The next prime is 78001307. The reversal of 78001305 is 50310087.

It is not a de Polignac number, because 78001305 - 2¹⁵ = 77968537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78001307) 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, 5982 + ... + 13848.

It is an arithmetic number, because the mean of its divisors is an integer number (7812924).

Almost surely, 2^78001305 is an apocalyptic number.

It is an amenable number.

78001305 is a deficient number, since it is larger than the sum of its proper divisors (47005479).

78001305 is a wasteful number, since it uses less digits than its factorization.

78001305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8536.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 78001305 is about 8831.8347470953. The cubic root of 78001305 is about 427.2682509854.

The spelling of 78001305 in words is "seventy-eight million, one thousand, three hundred five".