73805978 has 16 divisors (see below), whose sum is σ = 114518016. Its totient is φ = 35638320.

The previous prime is 73805969. The next prime is 73805981. The reversal of 73805978 is 87950837.

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, 39575 + ... + 41397.

It is an arithmetic number, because the mean of its divisors is an integer number (7157376).

Almost surely, 2^73805978 is an apocalyptic number.

73805978 is a deficient number, since it is larger than the sum of its proper divisors (40712038).

73805978 is a wasteful number, since it uses less digits than its factorization.

73805978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 73805978 is about 8591.0405656125. The cubic root of 73805978 is about 419.4664009727.

The spelling of 73805978 in words is "seventy-three million, eight hundred five thousand, nine hundred seventy-eight".