745840320 has 224 divisors, whose sum is σ = 2617671168. Its totient is φ = 178962432.

The previous prime is 745840313. The next prime is 745840373. The reversal of 745840320 is 23048547.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 374367 + ... + 376353.

It is an arithmetic number, because the mean of its divisors is an integer number (11686032).

Almost surely, 2^745840320 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 745840320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1308835584).

745840320 is an abundant number, since it is smaller than the sum of its proper divisors (1871830848).

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

745840320 is a wasteful number, since it uses less digits than its factorization.

745840320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047 (or 2037 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 745840320 is about 27310.0772609672. The cubic root of 745840320 is about 906.8774836570.

Adding to 745840320 its reverse (23048547), we get a palindrome (768888867).

The spelling of 745840320 in words is "seven hundred forty-five million, eight hundred forty thousand, three hundred twenty".