2198457 has 12 divisors (see below), whose sum is σ = 3362580. Its totient is φ = 1379328.

The previous prime is 2198453. The next prime is 2198473. The reversal of 2198457 is 7548912.

2198457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1527696 + 670761 = 1236^2 + 819^2 .

It is not a de Polignac number, because 2198457 - 2² = 2198453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2198453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7032 + ... + 7337.

It is an arithmetic number, because the mean of its divisors is an integer number (280215).

2^2198457 is an apocalyptic number.

It is an amenable number.

2198457 is a deficient number, since it is larger than the sum of its proper divisors (1164123).

2198457 is a wasteful number, since it uses less digits than its factorization.

2198457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14392 (or 14389 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 2198457 is about 1482.7194609905. The cubic root of 2198457 is about 130.0287313222.

The spelling of 2198457 in words is "two million, one hundred ninety-eight thousand, four hundred fifty-seven".