2197278 has 24 divisors (see below), whose sum is σ = 4843800. Its totient is φ = 719664.

The previous prime is 2197277. The next prime is 2197289. The reversal of 2197278 is 8727912.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28 + ... + 2096.

It is an arithmetic number, because the mean of its divisors is an integer number (201825).

2^2197278 is an apocalyptic number.

2197278 is an abundant number, since it is smaller than the sum of its proper divisors (2646522).

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

2197278 is a wasteful number, since it uses less digits than its factorization.

2197278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136 (or 2133 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 2197278 is about 1482.3218274046. The cubic root of 2197278 is about 130.0054830035.

The spelling of 2197278 in words is "two million, one hundred ninety-seven thousand, two hundred seventy-eight".