7128426 has 8 divisors (see below), whose sum is σ = 14256864. Its totient is φ = 2376140.

The previous prime is 7128391. The next prime is 7128427. The reversal of 7128426 is 6248217.

It is a sphenic number, since it is the product of 3 distinct primes.

7128426 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 7128393 and 7128402.

It is not an unprimeable number, because it can be changed into a prime (7128427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594030 + ... + 594041.

It is an arithmetic number, because the mean of its divisors is an integer number (1782108).

Almost surely, 2^7128426 is an apocalyptic number.

7128426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7128426 is a wasteful number, since it uses less digits than its factorization.

7128426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188076.

The product of its digits is 5376, while the sum is 30.

The square root of 7128426 is about 2669.9112344795. The cubic root of 7128426 is about 192.4558936449.

The spelling of 7128426 in words is "seven million, one hundred twenty-eight thousand, four hundred twenty-six".