2215600128 has 392 divisors, whose sum is σ = 7735659408. Its totient is φ = 621084672.

The previous prime is 2215600117. The next prime is 2215600133. The reversal of 2215600128 is 8210065122.

It is a happy number.

2215600128 is a `hidden beast` number, since 22 + 15 + 600 + 1 + 28 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 41803750 + ... + 41803802.

Almost surely, 2^2215600128 is an apocalyptic number.

2215600128 is a gapful number since it is divisible by the number (28) 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 2215600128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3867829704).

2215600128 is an abundant number, since it is smaller than the sum of its proper divisors (5520059280).

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

2215600128 is an frugal number, since it uses more digits than its factorization.

2215600128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2215600128 is about 47070.1617588043. The cubic root of 2215600128 is about 1303.6583595697.

The spelling of 2215600128 in words is "two billion, two hundred fifteen million, six hundred thousand, one hundred twenty-eight".