2636823420 has 864 divisors, whose sum is σ = 11503005696. Its totient is φ = 472780800.

The previous prime is 2636823419. The next prime is 2636823433. The reversal of 2636823420 is 243286362.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 85058805 + ... + 85058835.

It is an arithmetic number, because the mean of its divisors is an integer number (13313664).

Almost surely, 2^2636823420 is an apocalyptic number.

2636823420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2636823420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5751502848).

2636823420 is an abundant number, since it is smaller than the sum of its proper divisors (8866182276).

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

2636823420 is a wasteful number, since it uses less digits than its factorization.

2636823420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 2636823420 is about 51350.0089581297. The cubic root of 2636823420 is about 1381.5300924038.

The spelling of 2636823420 in words is "two billion, six hundred thirty-six million, eight hundred twenty-three thousand, four hundred twenty".