7252640 has 24 divisors (see below), whose sum is σ = 17134740. Its totient is φ = 2900992.

The previous prime is 7252633. The next prime is 7252649. The reversal of 7252640 is 462527.

It can be written as a sum of positive squares in 2 ways, for example, as 7246864 + 5776 = 2692^2 + 76^2 .

It is not an unprimeable number, because it can be changed into a prime (7252649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22505 + ... + 22824.

Almost surely, 2^7252640 is an apocalyptic number.

It is an amenable number.

7252640 is an abundant number, since it is smaller than the sum of its proper divisors (9882100).

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

7252640 is a wasteful number, since it uses less digits than its factorization.

7252640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45344 (or 45336 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 7252640 is about 2693.0725946398. The cubic root of 7252640 is about 193.5673213974.

The spelling of 7252640 in words is "seven million, two hundred fifty-two thousand, six hundred forty".