2172393 has 16 divisors (see below), whose sum is σ = 3273600. Its totient is φ = 1423440.

The previous prime is 2172389. The next prime is 2172397. The reversal of 2172393 is 3932712.

It is an interprime number because it is at equal distance from previous prime (2172389) and next prime (2172397).

It is not a de Polignac number, because 2172393 - 2² = 2172389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2172397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 988 + ... + 2306.

It is an arithmetic number, because the mean of its divisors is an integer number (204600).

2^2172393 is an apocalyptic number.

It is an amenable number.

2172393 is a deficient number, since it is larger than the sum of its proper divisors (1101207).

2172393 is a wasteful number, since it uses less digits than its factorization.

2172393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389 (or 1383 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 2172393 is about 1473.9039995875. The cubic root of 2172393 is about 129.5128314730.

The spelling of 2172393 in words is "two million, one hundred seventy-two thousand, three hundred ninety-three".