745812320 has 96 divisors (see below), whose sum is σ = 2023418880. Its totient is φ = 256919040.

The previous prime is 745812307. The next prime is 745812323. The reversal of 745812320 is 23218547.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745812323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22289 + ... + 44591.

It is an arithmetic number, because the mean of its divisors is an integer number (21077280).

Almost surely, 2^745812320 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 745812320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1011709440).

745812320 is an abundant number, since it is smaller than the sum of its proper divisors (1277606560).

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

745812320 is a wasteful number, since it uses less digits than its factorization.

745812320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22348 (or 22340 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 745812320 is about 27309.5646248709. The cubic root of 745812320 is about 906.8661349869.

The spelling of 745812320 in words is "seven hundred forty-five million, eight hundred twelve thousand, three hundred twenty".