78485500 has 24 divisors (see below), whose sum is σ = 171413424. Its totient is φ = 31394000.

The previous prime is 78485497. The next prime is 78485503. The reversal of 78485500 is 558487.

It is an interprime number because it is at equal distance from previous prime (78485497) and next prime (78485503).

It is a self number, because there is not a number n which added to its sum of digits gives 78485500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78485503) 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, 77986 + ... + 78985.

It is an arithmetic number, because the mean of its divisors is an integer number (7142226).

Almost surely, 2^78485500 is an apocalyptic number.

It is an amenable number.

78485500 is an abundant number, since it is smaller than the sum of its proper divisors (92927924).

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

78485500 is a wasteful number, since it uses less digits than its factorization.

78485500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156990 (or 156978 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 78485500 is about 8859.2042532047. The cubic root of 78485500 is about 428.1505206162.

The spelling of 78485500 in words is "seventy-eight million, four hundred eighty-five thousand, five hundred".