78454284 has 24 divisors (see below), whose sum is σ = 183266160. Its totient is φ = 26121984.

The previous prime is 78454267. The next prime is 78454291. The reversal of 78454284 is 48245487.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9232 + ... + 15560.

It is an arithmetic number, because the mean of its divisors is an integer number (7636090).

Almost surely, 2^78454284 is an apocalyptic number.

It is an amenable number.

78454284 is an abundant number, since it is smaller than the sum of its proper divisors (104811876).

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

78454284 is a wasteful number, since it uses less digits than its factorization.

78454284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7369 (or 7367 counting only the distinct ones).

The product of its digits is 286720, while the sum is 42.

The square root of 78454284 is about 8857.4422944776. The cubic root of 78454284 is about 428.0937503893.

The spelling of 78454284 in words is "seventy-eight million, four hundred fifty-four thousand, two hundred eighty-four".