78427484 has 12 divisors (see below), whose sum is σ = 141981000. Its totient is φ = 37861488.

The previous prime is 78427483. The next prime is 78427529. The reversal of 78427484 is 48472487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78427483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337934 + ... + 338165.

It is an arithmetic number, because the mean of its divisors is an integer number (11831750).

Almost surely, 2^78427484 is an apocalyptic number.

It is an amenable number.

78427484 is a deficient number, since it is larger than the sum of its proper divisors (63553516).

78427484 is a wasteful number, since it uses less digits than its factorization.

78427484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676132 (or 676130 counting only the distinct ones).

The product of its digits is 401408, while the sum is 44.

The square root of 78427484 is about 8855.9293131777. The cubic root of 78427484 is about 428.0449991992.

The spelling of 78427484 in words is "seventy-eight million, four hundred twenty-seven thousand, four hundred eighty-four".