78481500 has 48 divisors (see below), whose sum is σ = 228542496. Its totient is φ = 20928000.

The previous prime is 78481471. The next prime is 78481517. The reversal of 78481500 is 518487.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24661 + ... + 27660.

It is an arithmetic number, because the mean of its divisors is an integer number (4761302).

Almost surely, 2^78481500 is an apocalyptic number.

It is an amenable number.

78481500 is an abundant number, since it is smaller than the sum of its proper divisors (150060996).

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

78481500 is a wasteful number, since it uses less digits than its factorization.

78481500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52343 (or 52331 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 78481500 is about 8858.9784964182. The cubic root of 78481500 is about 428.1432469535.

Adding to 78481500 its reverse (518487), we get a palindrome (78999987).

The spelling of 78481500 in words is "seventy-eight million, four hundred eighty-one thousand, five hundred".