7273128 has 32 divisors (see below), whose sum is σ = 18295200. Its totient is φ = 2409408.

The previous prime is 7273099. The next prime is 7273151. The reversal of 7273128 is 8213727.

It is a junction number, because it is equal to n+sod(n) for n = 7273095 and 7273104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3450 + ... + 5142.

It is an arithmetic number, because the mean of its divisors is an integer number (571725).

Almost surely, 2^7273128 is an apocalyptic number.

It is an amenable number.

7273128 is an abundant number, since it is smaller than the sum of its proper divisors (11022072).

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

7273128 is a wasteful number, since it uses less digits than its factorization.

7273128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881 (or 1877 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 7273128 is about 2696.8737456544. The cubic root of 7273128 is about 193.7494196306.

The spelling of 7273128 in words is "seven million, two hundred seventy-three thousand, one hundred twenty-eight".