73090320 has 80 divisors (see below), whose sum is σ = 236449152. Its totient is φ = 18641920.

The previous prime is 73090319. The next prime is 73090351. The reversal of 73090320 is 2309037.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1101 + ... + 12140.

Almost surely, 2^73090320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73090320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118224576).

73090320 is an abundant number, since it is smaller than the sum of its proper divisors (163358832).

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

73090320 is a wasteful number, since it uses less digits than its factorization.

73090320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13280 (or 13274 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 73090320 is about 8549.2876896265. The cubic root of 73090320 is about 418.1062129457.

Adding to 73090320 its reverse (2309037), we get a palindrome (75399357).

The spelling of 73090320 in words is "seventy-three million, ninety thousand, three hundred twenty".