2398820 has 24 divisors (see below), whose sum is σ = 5067384. Its totient is φ = 953856.

The previous prime is 2398789. The next prime is 2398849. The reversal of 2398820 is 288932.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14884 + 2383936 = 122^2 + 1544^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5324 + ... + 5756.

It is an arithmetic number, because the mean of its divisors is an integer number (211141).

2^2398820 is an apocalyptic number.

2398820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2398820 is an abundant number, since it is smaller than the sum of its proper divisors (2668564).

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

2398820 is a wasteful number, since it uses less digits than its factorization.

2398820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 2398820 is about 1548.8124482971. The cubic root of 2398820 is about 133.8646438948.

The spelling of 2398820 in words is "two million, three hundred ninety-eight thousand, eight hundred twenty".