7128774 has 12 divisors (see below), whose sum is σ = 15445716. Its totient is φ = 2376252.

The previous prime is 7128767. The next prime is 7128799. The reversal of 7128774 is 4778217.

7128774 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 5.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 198004 + ... + 198039.

It is an arithmetic number, because the mean of its divisors is an integer number (1287143).

Almost surely, 2^7128774 is an apocalyptic number.

7128774 is an abundant number, since it is smaller than the sum of its proper divisors (8316942).

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

7128774 is a wasteful number, since it uses less digits than its factorization.

7128774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396051 (or 396048 counting only the distinct ones).

The product of its digits is 21952, while the sum is 36.

The square root of 7128774 is about 2669.9764043901. The cubic root of 7128774 is about 192.4590254050.

The spelling of 7128774 in words is "seven million, one hundred twenty-eight thousand, seven hundred seventy-four".