73391340 has 96 divisors (see below), whose sum is σ = 226275840. Its totient is φ = 17772480.

The previous prime is 73391333. The next prime is 73391341. The reversal of 73391340 is 4319337.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 73391298 and 73391307.

It is not an unprimeable number, because it can be changed into a prime (73391341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79401 + ... + 80319.

It is an arithmetic number, because the mean of its divisors is an integer number (2357040).

Almost surely, 2^73391340 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 73391340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113137920).

73391340 is an abundant number, since it is smaller than the sum of its proper divisors (152884500).

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

73391340 is a wasteful number, since it uses less digits than its factorization.

73391340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 73391340 is about 8566.8745759466. The cubic root of 73391340 is about 418.6794121755.

The spelling of 73391340 in words is "seventy-three million, three hundred ninety-one thousand, three hundred forty".