2215273536 has 672 divisors, whose sum is σ = 8547811200. Its totient is φ = 564350976.

The previous prime is 2215273507. The next prime is 2215273561. The reversal of 2215273536 is 6353725122.

2215273536 is a `hidden beast` number, since 2 + 2 + 1 + 52 + 73 + 536 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

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

Its product of digits (75600) is a multiple of the sum of its prime divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2215273536.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 116593335 + ... + 116593353.

Almost surely, 2^2215273536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2215273536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4273905600).

2215273536 is an abundant number, since it is smaller than the sum of its proper divisors (6332537664).

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

2215273536 is an equidigital number, since it uses as much as digits as its factorization.

2215273536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 48 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 2215273536 is about 47066.6924268107. The cubic root of 2215273536 is about 1303.5943008816.

Adding to 2215273536 its reverse (6353725122), we get a palindrome (8568998658).

The spelling of 2215273536 in words is "two billion, two hundred fifteen million, two hundred seventy-three thousand, five hundred thirty-six".