73449320 has 64 divisors (see below), whose sum is σ = 189751680. Its totient is φ = 25065216.

The previous prime is 73449319. The next prime is 73449347. The reversal of 73449320 is 2394437.

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 15 ways as a sum of consecutive naturals, for example, 77087 + ... + 78033.

It is an arithmetic number, because the mean of its divisors is an integer number (2964870).

Almost surely, 2^73449320 is an apocalyptic number.

73449320 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73449320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94875840).

73449320 is an abundant number, since it is smaller than the sum of its proper divisors (116302360).

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

73449320 is a wasteful number, since it uses less digits than its factorization.

73449320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1238 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 73449320 is about 8570.2578724330. The cubic root of 73449320 is about 418.7896369995.

The spelling of 73449320 in words is "seventy-three million, four hundred forty-nine thousand, three hundred twenty".