2190098 has 4 divisors (see below), whose sum is σ = 3285150. Its totient is φ = 1095048.

The previous prime is 2190091. The next prime is 2190103. The reversal of 2190098 is 8900912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2140369 + 49729 = 1463^2 + 223^2 .

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2190098.

It is not an unprimeable number, because it can be changed into a prime (2190091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547523 + ... + 547526.

2^2190098 is an apocalyptic number.

2190098 is a deficient number, since it is larger than the sum of its proper divisors (1095052).

2190098 is a wasteful number, since it uses less digits than its factorization.

2190098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095051.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 2190098 is about 1479.8979694560. The cubic root of 2190098 is about 129.8637230707.

The spelling of 2190098 in words is "two million, one hundred ninety thousand, ninety-eight".