2197028 has 6 divisors (see below), whose sum is σ = 3844806. Its totient is φ = 1098512.

The previous prime is 2197021. The next prime is 2197043. The reversal of 2197028 is 8207912.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2184484 + 12544 = 1478^2 + 112^2 .

It is not an unprimeable number, because it can be changed into a prime (2197021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274625 + ... + 274632.

It is an arithmetic number, because the mean of its divisors is an integer number (640801).

2^2197028 is an apocalyptic number.

It is an amenable number.

2197028 is a deficient number, since it is larger than the sum of its proper divisors (1647778).

2197028 is a wasteful number, since it uses less digits than its factorization.

2197028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549261 (or 549259 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2197028 is about 1482.2374978390. The cubic root of 2197028 is about 130.0005522659. Note that the first 3 decimals are identical.

The spelling of 2197028 in words is "two million, one hundred ninety-seven thousand, twenty-eight".