73985810 has 16 divisors (see below), whose sum is σ = 140184000. Its totient is φ = 28036656.

The previous prime is 73985803. The next prime is 73985831. The reversal of 73985810 is 1858937.

It is a happy number.

It is a super-2 number, since 2×73985810² = 10947800162712200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194510 + ... + 194889.

It is an arithmetic number, because the mean of its divisors is an integer number (8761500).

Almost surely, 2^73985810 is an apocalyptic number.

73985810 is a deficient number, since it is larger than the sum of its proper divisors (66198190).

73985810 is a wasteful number, since it uses less digits than its factorization.

73985810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389425.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 73985810 is about 8601.5004505028. The cubic root of 73985810 is about 419.8068083526.

The spelling of 73985810 in words is "seventy-three million, nine hundred eighty-five thousand, eight hundred ten".