2198340 has 120 divisors (see below), whose sum is σ = 7318080. Its totient is φ = 551232.

The previous prime is 2198327. The next prime is 2198347. The reversal of 2198340 is 438912.

2198340 = T₁₃₁ + T₁₃₂ + ... + T₂₄₈.

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 (2198347) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 37231 + ... + 37289.

It is an arithmetic number, because the mean of its divisors is an integer number (60984).

2^2198340 is an apocalyptic number.

2198340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2198340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3659040).

2198340 is an abundant number, since it is smaller than the sum of its proper divisors (5119740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2198340 is a wasteful number, since it uses less digits than its factorization.

2198340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2198340 is about 1482.6800059352. The cubic root of 2198340 is about 130.0264246087.

The spelling of 2198340 in words is "two million, one hundred ninety-eight thousand, three hundred forty".