7251915240 has 48 divisors (see below), whose sum is σ = 23568725700. Its totient is φ = 1933843968.

The previous prime is 7251915179. The next prime is 7251915257. The reversal of 7251915240 is 425191527.

It can be written as a sum of positive squares in 2 ways, for example, as 7251884964 + 30276 = 85158^2 + 174^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7251915195 and 7251915204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10071745 + ... + 10072464.

Almost surely, 2^7251915240 is an apocalyptic number.

It is an amenable number.

7251915240 is an abundant number, since it is smaller than the sum of its proper divisors (16316810460).

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

7251915240 is a wasteful number, since it uses less digits than its factorization.

7251915240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20144226 (or 20144219 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 7251915240 is about 85158.1777635008. The cubic root of 7251915240 is about 1935.6087342231.

The spelling of 7251915240 in words is "seven billion, two hundred fifty-one million, nine hundred fifteen thousand, two hundred forty".