745079840 has 48 divisors (see below), whose sum is σ = 1762930008. Its totient is φ = 297578496.

The previous prime is 745079831. The next prime is 745079849. The reversal of 745079840 is 48970547.

It is an interprime number because it is at equal distance from previous prime (745079831) and next prime (745079849).

It can be written as a sum of positive squares in 4 ways, for example, as 724901776 + 20178064 = 26924^2 + 4492^2 .

It is a junction number, because it is equal to n+sod(n) for n = 745079791 and 745079800.

It is not an unprimeable number, because it can be changed into a prime (745079849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114104 + ... + 120456.

Almost surely, 2^745079840 is an apocalyptic number.

It is an amenable number.

745079840 is an abundant number, since it is smaller than the sum of its proper divisors (1017850168).

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

745079840 is a wasteful number, since it uses less digits than its factorization.

745079840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101 (or 7093 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 745079840 is about 27296.1506443674. The cubic root of 745079840 is about 906.5691528151.

The spelling of 745079840 in words is "seven hundred forty-five million, seventy-nine thousand, eight hundred forty".