2197923 has 32 divisors (see below), whose sum is σ = 3687936. Its totient is φ = 1133568.

The previous prime is 2197919. The next prime is 2197933. The reversal of 2197923 is 3297912.

It is not a de Polignac number, because 2197923 - 2² = 2197919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2197933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22611 + ... + 22707.

It is an arithmetic number, because the mean of its divisors is an integer number (115248).

2^2197923 is an apocalyptic number.

2197923 is a deficient number, since it is larger than the sum of its proper divisors (1490013).

2197923 is a wasteful number, since it uses less digits than its factorization.

2197923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203.

The product of its digits is 6804, while the sum is 33.

The square root of 2197923 is about 1482.5393755311. The cubic root of 2197923 is about 130.0182025794.

The spelling of 2197923 in words is "two million, one hundred ninety-seven thousand, nine hundred twenty-three".