7198728 has 32 divisors (see below), whose sum is σ = 18619200. Its totient is φ = 2316608.

The previous prime is 7198721. The next prime is 7198771. The reversal of 7198728 is 8278917.

It is a self number, because there is not a number n which added to its sum of digits gives 7198728.

It is not an unprimeable number, because it can be changed into a prime (7198721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4476 + ... + 5867.

It is an arithmetic number, because the mean of its divisors is an integer number (581850).

Almost surely, 2^7198728 is an apocalyptic number.

It is an amenable number.

7198728 is an abundant number, since it is smaller than the sum of its proper divisors (11420472).

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

7198728 is a wasteful number, since it uses less digits than its factorization.

7198728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10381 (or 10377 counting only the distinct ones).

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

The square root of 7198728 is about 2683.0445393247. The cubic root of 7198728 is about 193.0865049320.

The spelling of 7198728 in words is "seven million, one hundred ninety-eight thousand, seven hundred twenty-eight".