2646436420 has 12 divisors (see below), whose sum is σ = 5557516524. Its totient is φ = 1058574560.

The previous prime is 2646436409. The next prime is 2646436447. The reversal of 2646436420 is 246346462.

It can be written as a sum of positive squares in 2 ways, for example, as 1425213504 + 1221222916 = 37752^2 + 34946^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2646436420.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66160891 + ... + 66160930.

It is an arithmetic number, because the mean of its divisors is an integer number (463126377).

Almost surely, 2^2646436420 is an apocalyptic number.

2646436420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2646436420 is an abundant number, since it is smaller than the sum of its proper divisors (2911080104).

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

2646436420 is a wasteful number, since it uses less digits than its factorization.

2646436420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132321830 (or 132321828 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 37.

The square root of 2646436420 is about 51443.5265120890. The cubic root of 2646436420 is about 1383.2069260149.

The spelling of 2646436420 in words is "two billion, six hundred forty-six million, four hundred thirty-six thousand, four hundred twenty".