2409820 has 36 divisors (see below), whose sum is σ = 5889240. Its totient is φ = 825888.

The previous prime is 2409817. The next prime is 2409829. The reversal of 2409820 is 289042.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2409829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250 + ... + 2209.

It is an arithmetic number, because the mean of its divisors is an integer number (163590).

2^2409820 is an apocalyptic number.

2409820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2409820 is an abundant number, since it is smaller than the sum of its proper divisors (3479420).

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

2409820 is a wasteful number, since it uses less digits than its factorization.

2409820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482 (or 2473 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2409820 is about 1552.3594944471. The cubic root of 2409820 is about 134.0689479586.

The spelling of 2409820 in words is "two million, four hundred nine thousand, eight hundred twenty".