2656202220 has 480 divisors, whose sum is σ = 10142858880. Its totient is φ = 568995840.

The previous prime is 2656202209. The next prime is 2656202231. The reversal of 2656202220 is 222026562.

2656202220 is a `hidden beast` number, since 2 + 656 + 2 + 0 + 2 + 2 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (2656202209) and next prime (2656202231).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 13483162 + ... + 13483358.

It is an arithmetic number, because the mean of its divisors is an integer number (21130956).

Almost surely, 2^2656202220 is an apocalyptic number.

2656202220 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 2656202220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5071429440).

2656202220 is an abundant number, since it is smaller than the sum of its proper divisors (7486656660).

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

2656202220 is a wasteful number, since it uses less digits than its factorization.

2656202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2656202220 is about 51538.3567840497. The cubic root of 2656202220 is about 1384.9062602997.

Adding to 2656202220 its reverse (222026562), we get a palindrome (2878228782).

The spelling of 2656202220 in words is "two billion, six hundred fifty-six million, two hundred two thousand, two hundred twenty".