2197288 has 8 divisors (see below), whose sum is σ = 4119930. Its totient is φ = 1098640.

The previous prime is 2197277. The next prime is 2197289. The reversal of 2197288 is 8827912.

It can be written as a sum of positive squares in only one way, i.e., 1790244 + 407044 = 1338^2 + 638^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2197289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137323 + ... + 137338.

2^2197288 is an apocalyptic number.

It is an amenable number.

2197288 is a deficient number, since it is larger than the sum of its proper divisors (1922642).

2197288 is a wasteful number, since it uses less digits than its factorization.

2197288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274667 (or 274663 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The square root of 2197288 is about 1482.3252004874. The cubic root of 2197288 is about 130.0056802252.

It can be divided in two parts, 2197 and 288, that added together give a triangular number (2485 = T₇₀).

The spelling of 2197288 in words is "two million, one hundred ninety-seven thousand, two hundred eighty-eight".