2406820840 has 32 divisors (see below), whose sum is σ = 5451705000. Its totient is φ = 956264704.

The previous prime is 2406820831. The next prime is 2406820841. The reversal of 2406820840 is 480286042.

It can be written as a sum of positive squares in 4 ways, for example, as 1561988484 + 844832356 = 39522^2 + 29066^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2406820796 and 2406820805.

It is not an unprimeable number, because it can be changed into a prime (2406820841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195955 + ... + 207874.

Almost surely, 2^2406820840 is an apocalyptic number.

2406820840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2406820840 is an abundant number, since it is smaller than the sum of its proper divisors (3044884160).

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

2406820840 is a wasteful number, since it uses less digits than its factorization.

2406820840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403989 (or 403985 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 2406820840 is about 49059.3603708813. The cubic root of 2406820840 is about 1340.1330602256.

The spelling of 2406820840 in words is "two billion, four hundred six million, eight hundred twenty thousand, eight hundred forty".