2172098 has 8 divisors (see below), whose sum is σ = 3337740. Its totient is φ = 1059520.

The previous prime is 2172091. The next prime is 2172109. The reversal of 2172098 is 8902712.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1803649 + 368449 = 1343^2 + 607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2172098.

It is not an unprimeable number, because it can be changed into a prime (2172091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13163 + ... + 13326.

2^2172098 is an apocalyptic number.

2172098 is a deficient number, since it is larger than the sum of its proper divisors (1165642).

2172098 is a wasteful number, since it uses less digits than its factorization.

2172098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26532.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2172098 is about 1473.8039218295. The cubic root of 2172098 is about 129.5069688115.

The spelling of 2172098 in words is "two million, one hundred seventy-two thousand, ninety-eight".