7289128 has 32 divisors (see below), whose sum is σ = 17040960. Its totient is φ = 2839680.

The previous prime is 7289119. The next prime is 7289129. The reversal of 7289128 is 8219827.

It is not an unprimeable number, because it can be changed into a prime (7289129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5301 + ... + 6532.

It is an arithmetic number, because the mean of its divisors is an integer number (532530).

Almost surely, 2^7289128 is an apocalyptic number.

It is an amenable number.

7289128 is an abundant number, since it is smaller than the sum of its proper divisors (9751832).

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

7289128 is a wasteful number, since it uses less digits than its factorization.

7289128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11857 (or 11853 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The square root of 7289128 is about 2699.8385136893. The cubic root of 7289128 is about 193.8913906545.

The spelling of 7289128 in words is "seven million, two hundred eighty-nine thousand, one hundred twenty-eight".