2174728 has 8 divisors (see below), whose sum is σ = 4077630. Its totient is φ = 1087360.

The previous prime is 2174723. The next prime is 2174729. The reversal of 2174728 is 8274712.

It can be written as a sum of positive squares in only one way, i.e., 1170724 + 1004004 = 1082^2 + 1002^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2174728.

It is not an unprimeable number, because it can be changed into a prime (2174723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135913 + ... + 135928.

2^2174728 is an apocalyptic number.

It is an amenable number.

2174728 is a deficient number, since it is larger than the sum of its proper divisors (1902902).

2174728 is a wasteful number, since it uses less digits than its factorization.

2174728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271847 (or 271843 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The square root of 2174728 is about 1474.6959008555. The cubic root of 2174728 is about 129.5592172140.

The spelling of 2174728 in words is "two million, one hundred seventy-four thousand, seven hundred twenty-eight".