745487240 has 16 divisors (see below), whose sum is σ = 1677346380. Its totient is φ = 298194880.

The previous prime is 745487231. The next prime is 745487251. The reversal of 745487240 is 42784547.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 684240964 + 61246276 = 26158^2 + 7826^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9318551 + ... + 9318630.

Almost surely, 2^745487240 is an apocalyptic number.

It is an amenable number.

745487240 is an abundant number, since it is smaller than the sum of its proper divisors (931859140).

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

745487240 is a wasteful number, since it uses less digits than its factorization.

745487240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18637192 (or 18637188 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 41.

The square root of 745487240 is about 27303.6122152363. The cubic root of 745487240 is about 906.7343561295.

The spelling of 745487240 in words is "seven hundred forty-five million, four hundred eighty-seven thousand, two hundred forty".