7109428 has 12 divisors (see below), whose sum is σ = 12645892. Its totient is φ = 3496320.

The previous prime is 7109423. The next prime is 7109429. The reversal of 7109428 is 8249017.

It can be written as a sum of positive squares in 2 ways, for example, as 3196944 + 3912484 = 1788^2 + 1978^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7109428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7109423) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14325 + ... + 14812.

Almost surely, 2^7109428 is an apocalyptic number.

It is an amenable number.

7109428 is a deficient number, since it is larger than the sum of its proper divisors (5536464).

7109428 is a wasteful number, since it uses less digits than its factorization.

7109428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29202 (or 29200 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 7109428 is about 2666.3510646575. The cubic root of 7109428 is about 192.2847698463.

The spelling of 7109428 in words is "seven million, one hundred nine thousand, four hundred twenty-eight".