7122528 has 72 divisors (see below), whose sum is σ = 23154768. Its totient is φ = 2034432.

The previous prime is 7122517. The next prime is 7122551. The reversal of 7122528 is 8252217.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×7122528² = 101460810221568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 250 + ... + 3782.

It is an arithmetic number, because the mean of its divisors is an integer number (321594).

Almost surely, 2^7122528 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 7122528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11577384).

7122528 is an abundant number, since it is smaller than the sum of its proper divisors (16032240).

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

7122528 is a wasteful number, since it uses less digits than its factorization.

7122528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556 (or 3545 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 7122528 is about 2668.8064748123. The cubic root of 7122528 is about 192.4028002007.

It can be divided in two parts, 71225 and 28, that added together give a triangular number (71253 = T₃₇₇).

The spelling of 7122528 in words is "seven million, one hundred twenty-two thousand, five hundred twenty-eight".