78454274 has 16 divisors (see below), whose sum is σ = 120820128. Its totient is φ = 38187072.

The previous prime is 78454267. The next prime is 78454291. The reversal of 78454274 is 47245487.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27629 + ... + 30335.

It is an arithmetic number, because the mean of its divisors is an integer number (7551258).

Almost surely, 2^78454274 is an apocalyptic number.

78454274 is a deficient number, since it is larger than the sum of its proper divisors (42365854).

78454274 is a wasteful number, since it uses less digits than its factorization.

78454274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089.

The product of its digits is 250880, while the sum is 41.

The square root of 78454274 is about 8857.4417299805. The cubic root of 78454274 is about 428.0937322006.

The spelling of 78454274 in words is "seventy-eight million, four hundred fifty-four thousand, two hundred seventy-four".