7249128 has 64 divisors (see below), whose sum is σ = 19051200. Its totient is φ = 2296320.

The previous prime is 7249111. The next prime is 7249129. The reversal of 7249128 is 8219427.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7249129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52083 + ... + 52221.

It is an arithmetic number, because the mean of its divisors is an integer number (297675).

Almost surely, 2^7249128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7249128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9525600).

7249128 is an abundant number, since it is smaller than the sum of its proper divisors (11802072).

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

7249128 is a wasteful number, since it uses less digits than its factorization.

7249128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 238 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 7249128 is about 2692.4204723631. The cubic root of 7249128 is about 193.5360721699.

Subtracting 7249128 from its reverse (8219427), we obtain a cube (970299 = 99³).

The spelling of 7249128 in words is "seven million, two hundred forty-nine thousand, one hundred twenty-eight".