7251988 has 12 divisors (see below), whose sum is σ = 12808180. Its totient is φ = 3592512.

The previous prime is 7251983. The next prime is 7251989. The reversal of 7251988 is 8891527.

It can be written as a sum of positive squares in 2 ways, for example, as 2917264 + 4334724 = 1708^2 + 2082^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7251988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7251983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7881 + ... + 8752.

Almost surely, 2^7251988 is an apocalyptic number.

It is an amenable number.

7251988 is a deficient number, since it is larger than the sum of its proper divisors (5556192).

7251988 is a wasteful number, since it uses less digits than its factorization.

7251988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16746 (or 16744 counting only the distinct ones).

The product of its digits is 40320, while the sum is 40.

The square root of 7251988 is about 2692.9515405963. The cubic root of 7251988 is about 193.5615207659.

The spelling of 7251988 in words is "seven million, two hundred fifty-one thousand, nine hundred eighty-eight".