2398220 has 36 divisors (see below), whose sum is σ = 5541312. Its totient is φ = 871200.

The previous prime is 2398211. The next prime is 2398223. The reversal of 2398220 is 228932.

It is a self number, because there is not a number n which added to its sum of digits gives 2398220.

It is not an unprimeable number, because it can be changed into a prime (2398223) 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 11 ways as a sum of consecutive naturals, for example, 1925 + ... + 2915.

2^2398220 is an apocalyptic number.

2398220 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 2398220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2770656).

2398220 is an abundant number, since it is smaller than the sum of its proper divisors (3143092).

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

2398220 is a wasteful number, since it uses less digits than its factorization.

2398220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022 (or 1009 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2398220 is about 1548.6187393933. The cubic root of 2398220 is about 133.8534820898.

The spelling of 2398220 in words is "two million, three hundred ninety-eight thousand, two hundred twenty".