7378128 has 50 divisors (see below), whose sum is σ = 21358194. Its totient is φ = 2458944.

The previous prime is 7378123. The next prime is 7378141. The reversal of 7378128 is 8218737.

It can be written as a sum of positive squares in only one way, i.e., 4981824 + 2396304 = 2232^2 + 1548^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7378092 and 7378101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7378121) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1551 + ... + 4142.

Almost surely, 2^7378128 is an apocalyptic number.

It is an amenable number.

7378128 is an abundant number, since it is smaller than the sum of its proper divisors (13980066).

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

7378128 is a wasteful number, since it uses less digits than its factorization.

7378128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5713 (or 5698 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 7378128 is about 2716.2709732278. The cubic root of 7378128 is about 194.6773362097.

The spelling of 7378128 in words is "seven million, three hundred seventy-eight thousand, one hundred twenty-eight".