7798128 has 40 divisors (see below), whose sum is σ = 21696528. Its totient is φ = 2399232.

The previous prime is 7798111. The next prime is 7798163. The reversal of 7798128 is 8218977.

It is a self number, because there is not a number n which added to its sum of digits gives 7798128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5625 + ... + 6872.

Almost surely, 2^7798128 is an apocalyptic number.

7798128 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

7798128 is an abundant number, since it is smaller than the sum of its proper divisors (13898400).

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

7798128 is a wasteful number, since it uses less digits than its factorization.

7798128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12521 (or 12515 counting only the distinct ones).

The product of its digits is 56448, while the sum is 42.

The square root of 7798128 is about 2792.5128468818. The cubic root of 7798128 is about 198.3033814588.

The spelling of 7798128 in words is "seven million, seven hundred ninety-eight thousand, one hundred twenty-eight".