78114478 has 8 divisors (see below), whose sum is σ = 126184968. Its totient is φ = 36052824.

The previous prime is 78114467. The next prime is 78114503. The reversal of 78114478 is 87441187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78114478² = 12203743346424968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78114478.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1502176 + ... + 1502227.

It is an arithmetic number, because the mean of its divisors is an integer number (15773121).

Almost surely, 2^78114478 is an apocalyptic number.

78114478 is a deficient number, since it is larger than the sum of its proper divisors (48070490).

78114478 is a wasteful number, since it uses less digits than its factorization.

78114478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004418.

The product of its digits is 50176, while the sum is 40.

The square root of 78114478 is about 8838.2395305853. The cubic root of 78114478 is about 427.4747939495.

The spelling of 78114478 in words is "seventy-eight million, one hundred fourteen thousand, four hundred seventy-eight".