745191040 has 128 divisors (see below), whose sum is σ = 1959085440. Its totient is φ = 268800000.

The previous prime is 745191023. The next prime is 745191049. The reversal of 745191040 is 40191547.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 745190993 and 745191011.

It is not an unprimeable number, because it can be changed into a prime (745191049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062690 + ... + 1063390.

It is an arithmetic number, because the mean of its divisors is an integer number (15305355).

Almost surely, 2^745191040 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 745191040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (979542720).

745191040 is an abundant number, since it is smaller than the sum of its proper divisors (1213894400).

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

745191040 is a wasteful number, since it uses less digits than its factorization.

745191040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 745191040 is about 27298.1874856189. The cubic root of 745191040 is about 906.6142511029.

The spelling of 745191040 in words is "seven hundred forty-five million, one hundred ninety-one thousand, forty".