2106398 has 16 divisors (see below), whose sum is σ = 3696000. Its totient is φ = 881496.

The previous prime is 2106389. The next prime is 2106407. The reversal of 2106398 is 8936012.

It is an interprime number because it is at equal distance from previous prime (2106389) and next prime (2106407).

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 2106398.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1148 + ... + 2351.

It is an arithmetic number, because the mean of its divisors is an integer number (231000).

2^2106398 is an apocalyptic number.

2106398 is a deficient number, since it is larger than the sum of its proper divisors (1589602).

2106398 is a wasteful number, since it uses less digits than its factorization.

2106398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2106398 is about 1451.3435155055. The cubic root of 2106398 is about 128.1878345774.

The spelling of 2106398 in words is "two million, one hundred six thousand, three hundred ninety-eight".