78074946 has 24 divisors (see below), whose sum is σ = 171203760. Its totient is φ = 25710936.

The previous prime is 78074929. The next prime is 78074981. The reversal of 78074946 is 64947087.

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 24636 + ... + 27623.

It is an arithmetic number, because the mean of its divisors is an integer number (7133490).

Almost surely, 2^78074946 is an apocalyptic number.

78074946 is an abundant number, since it is smaller than the sum of its proper divisors (93128814).

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

78074946 is a wasteful number, since it uses less digits than its factorization.

78074946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52350 (or 52347 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 78074946 is about 8836.0028293341. The cubic root of 78074946 is about 427.4026699527.

The spelling of 78074946 in words is "seventy-eight million, seventy-four thousand, nine hundred forty-six".