2197928 has 16 divisors (see below), whose sum is σ = 4222260. Its totient is φ = 1072000.

The previous prime is 2197919. The next prime is 2197933. The reversal of 2197928 is 8297912.

It can be written as a sum of positive squares in 2 ways, for example, as 1965604 + 232324 = 1402^2 + 482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2197891 and 2197900.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3023 + ... + 3678.

2^2197928 is an apocalyptic number.

It is an amenable number.

2197928 is a deficient number, since it is larger than the sum of its proper divisors (2024332).

2197928 is a wasteful number, since it uses less digits than its factorization.

2197928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6748 (or 6744 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 2197928 is about 1482.5410618259. The cubic root of 2197928 is about 130.0183011710.

It can be divided in two parts, 2197 and 928, that added together give a 5-th power (3125 = 5⁵).

The spelling of 2197928 in words is "two million, one hundred ninety-seven thousand, nine hundred twenty-eight".