78054946 has 8 divisors (see below), whose sum is σ = 117677340. Its totient is φ = 38829168.

The previous prime is 78054937. The next prime is 78054947. The reversal of 78054946 is 64945087.

It can be written as a sum of positive squares in 2 ways, for example, as 76125625 + 1929321 = 8725^2 + 1389^2 .

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

It is not an unprimeable number, because it can be changed into a prime (78054947) 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, 98661 + ... + 99448.

Almost surely, 2^78054946 is an apocalyptic number.

78054946 is a deficient number, since it is larger than the sum of its proper divisors (39622394).

78054946 is a wasteful number, since it uses less digits than its factorization.

78054946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198308.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 78054946 is about 8834.8710233936. The cubic root of 78054946 is about 427.3661717594.

The spelling of 78054946 in words is "seventy-eight million, fifty-four thousand, nine hundred forty-six".