7243128 has 32 divisors (see below), whose sum is σ = 20120400. Its totient is φ = 2414304.

The previous prime is 7243111. The next prime is 7243129. The reversal of 7243128 is 8213427.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7243129) 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, 16551 + ... + 16982.

Almost surely, 2^7243128 is an apocalyptic number.

It is an amenable number.

7243128 is an abundant number, since it is smaller than the sum of its proper divisors (12877272).

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

7243128 is a wasteful number, since it uses less digits than its factorization.

7243128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33548 (or 33538 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 7243128 is about 2691.3060026686. The cubic root of 7243128 is about 193.4826617480.

Subtracting 7243128 from its reverse (8213427), we obtain a cube (970299 = 99³).

The spelling of 7243128 in words is "seven million, two hundred forty-three thousand, one hundred twenty-eight".