7561328 has 20 divisors (see below), whose sum is σ = 15512400. Its totient is φ = 3558144.

The previous prime is 7561291. The next prime is 7561331. The reversal of 7561328 is 8231657.

It is a happy number.

It is a super-2 number, since 2×7561328² = 114347362247168, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7561294 and 7561303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13628 + ... + 14171.

It is an arithmetic number, because the mean of its divisors is an integer number (775620).

Almost surely, 2^7561328 is an apocalyptic number.

It is an amenable number.

7561328 is an abundant number, since it is smaller than the sum of its proper divisors (7951072).

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

7561328 is a wasteful number, since it uses less digits than its factorization.

7561328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27824 (or 27818 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 7561328 is about 2749.7869008343. The cubic root of 7561328 is about 196.2754699386.

The spelling of 7561328 in words is "seven million, five hundred sixty-one thousand, three hundred twenty-eight".