2489656420 has 12 divisors (see below), whose sum is σ = 5228278524. Its totient is φ = 995862560.

The previous prime is 2489656381. The next prime is 2489656439. The reversal of 2489656420 is 246569842.

It can be written as a sum of positive squares in 2 ways, for example, as 524684836 + 1964971584 = 22906^2 + 44328^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62241391 + ... + 62241430.

It is an arithmetic number, because the mean of its divisors is an integer number (435689877).

Almost surely, 2^2489656420 is an apocalyptic number.

2489656420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2489656420 is an abundant number, since it is smaller than the sum of its proper divisors (2738622104).

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

2489656420 is a wasteful number, since it uses less digits than its factorization.

2489656420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124482830 (or 124482828 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The square root of 2489656420 is about 49896.4569884476. The cubic root of 2489656420 is about 1355.3344344997.

The spelling of 2489656420 in words is "two billion, four hundred eighty-nine million, six hundred fifty-six thousand, four hundred twenty".