73173830 has 16 divisors (see below), whose sum is σ = 134516160. Its totient is φ = 28646592.

The previous prime is 73173823. The next prime is 73173851. The reversal of 73173830 is 3837137.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77375 + ... + 78314.

It is an arithmetic number, because the mean of its divisors is an integer number (8407260).

Almost surely, 2^73173830 is an apocalyptic number.

73173830 is a deficient number, since it is larger than the sum of its proper divisors (61342330).

73173830 is a wasteful number, since it uses less digits than its factorization.

73173830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155743.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 73173830 is about 8554.1703279745. The cubic root of 73173830 is about 418.2653893382.

The spelling of 73173830 in words is "seventy-three million, one hundred seventy-three thousand, eight hundred thirty".