7123928 has 32 divisors (see below), whose sum is σ = 15932160. Its totient is φ = 2919840.

The previous prime is 7123903. The next prime is 7123957. The reversal of 7123928 is 8293217.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7123894 and 7123903.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1478 + ... + 4053.

It is an arithmetic number, because the mean of its divisors is an integer number (497880).

Almost surely, 2^7123928 is an apocalyptic number.

It is an amenable number.

7123928 is an abundant number, since it is smaller than the sum of its proper divisors (8808232).

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

7123928 is a wasteful number, since it uses less digits than its factorization.

7123928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5567 (or 5563 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 7123928 is about 2669.0687514562. The cubic root of 7123928 is about 192.4154055694.

The spelling of 7123928 in words is "seven million, one hundred twenty-three thousand, nine hundred twenty-eight".