2439820 has 24 divisors (see below), whose sum is σ = 5244624. Its totient is φ = 952896.

The previous prime is 2439803. The next prime is 2439839. The reversal of 2439820 is 289342.

It is a d-powerful number, because it can be written as 2³ + 4⁹ + 3¹³ + 9⁵ + 8 + 2¹⁹ + 0 .

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, 559 + ... + 2278.

It is an arithmetic number, because the mean of its divisors is an integer number (218526).

2^2439820 is an apocalyptic number.

2439820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2439820 is an abundant number, since it is smaller than the sum of its proper divisors (2804804).

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

2439820 is a wasteful number, since it uses less digits than its factorization.

2439820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2439820 is about 1561.9923175227. The cubic root of 2439820 is about 134.6229993809.

The spelling of 2439820 in words is "two million, four hundred thirty-nine thousand, eight hundred twenty".