745398720 has 672 divisors, whose sum is σ = 3113349120. Its totient is φ = 167270400.

The previous prime is 745398713. The next prime is 745398721. The reversal of 745398720 is 27893547.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745398721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24045105 + ... + 24045135.

It is an arithmetic number, because the mean of its divisors is an integer number (4632960).

Almost surely, 2^745398720 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 745398720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556674560).

745398720 is an abundant number, since it is smaller than the sum of its proper divisors (2367950400).

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

745398720 is a wasteful number, since it uses less digits than its factorization.

745398720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 745398720 is about 27301.9911361791. The cubic root of 745398720 is about 906.6984658205.

The spelling of 745398720 in words is "seven hundred forty-five million, three hundred ninety-eight thousand, seven hundred twenty".