78098946 has 16 divisors (see below), whose sum is σ = 157248000. Its totient is φ = 25857968.

The previous prime is 78098929. The next prime is 78098981. The reversal of 78098946 is 64989087.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 42786 + ... + 44573.

It is an arithmetic number, because the mean of its divisors is an integer number (9828000).

Almost surely, 2^78098946 is an apocalyptic number.

78098946 is an abundant number, since it is smaller than the sum of its proper divisors (79149054).

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

78098946 is a wasteful number, since it uses less digits than its factorization.

78098946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87513.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 78098946 is about 8837.3608051273. The cubic root of 78098946 is about 427.4464595580.

The spelling of 78098946 in words is "seventy-eight million, ninety-eight thousand, nine hundred forty-six".