2420680820 has 24 divisors (see below), whose sum is σ = 5117553000. Its totient is φ = 961772672.

The previous prime is 2420680781. The next prime is 2420680861. The reversal of 2420680820 is 280860242.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2598544 + 2418082276 = 1612^2 + 49174^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403175 + ... + 409134.

It is an arithmetic number, because the mean of its divisors is an integer number (213231375).

Almost surely, 2^2420680820 is an apocalyptic number.

2420680820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2420680820 is an abundant number, since it is smaller than the sum of its proper divisors (2696872180).

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

2420680820 is a wasteful number, since it uses less digits than its factorization.

2420680820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812467 (or 812465 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 2420680820 is about 49200.4148356495. The cubic root of 2420680820 is about 1342.7005795504.

The spelling of 2420680820 in words is "two billion, four hundred twenty million, six hundred eighty thousand, eight hundred twenty".