78589260 has 36 divisors (see below), whose sum is σ = 238387968. Its totient is φ = 20957088.

The previous prime is 78589243. The next prime is 78589267. The reversal of 78589260 is 6298587.

78589260 is a `hidden beast` number, since 7 + 8 + 589 + 2 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (78589267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218124 + ... + 218483.

It is an arithmetic number, because the mean of its divisors is an integer number (6621888).

Almost surely, 2^78589260 is an apocalyptic number.

It is an amenable number.

78589260 is an abundant number, since it is smaller than the sum of its proper divisors (159798708).

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

78589260 is a wasteful number, since it uses less digits than its factorization.

78589260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436622 (or 436617 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 78589260 is about 8865.0583754423. The cubic root of 78589260 is about 428.3391131393.

The spelling of 78589260 in words is "seventy-eight million, five hundred eighty-nine thousand, two hundred sixty".