78481892 has 12 divisors (see below), whose sum is σ = 138187056. Its totient is φ = 38999880.

The previous prime is 78481883. The next prime is 78481901. The reversal of 78481892 is 29818487.

It is an interprime number because it is at equal distance from previous prime (78481883) and next prime (78481901).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59534 + ... + 60837.

It is an arithmetic number, because the mean of its divisors is an integer number (11515588).

Almost surely, 2^78481892 is an apocalyptic number.

It is an amenable number.

78481892 is a deficient number, since it is larger than the sum of its proper divisors (59705164).

78481892 is a wasteful number, since it uses less digits than its factorization.

78481892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120538 (or 120536 counting only the distinct ones).

The product of its digits is 258048, while the sum is 47.

The square root of 78481892 is about 8859.0006208375. Note that the first 3 decimals coincide. The cubic root of 78481892 is about 428.1439597834.

The spelling of 78481892 in words is "seventy-eight million, four hundred eighty-one thousand, eight hundred ninety-two".