2215071400 has 96 divisors (see below), whose sum is σ = 5301725400. Its totient is φ = 860288000.

The previous prime is 2215071361. The next prime is 2215071401. The reversal of 2215071400 is 41705122.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 452583076 + 1762488324 = 21274^2 + 41982^2 .

It is not an unprimeable number, because it can be changed into a prime (2215071401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1069566 + ... + 1071634.

Almost surely, 2^2215071400 is an apocalyptic number.

2215071400 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 2215071400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2650862700).

2215071400 is an abundant number, since it is smaller than the sum of its proper divisors (3086654000).

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

2215071400 is a wasteful number, since it uses less digits than its factorization.

2215071400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239 (or 2230 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 2215071400 is about 47064.5450418890. The cubic root of 2215071400 is about 1303.5546501946.

Adding to 2215071400 its reverse (41705122), we get a palindrome (2256776522).

The spelling of 2215071400 in words is "two billion, two hundred fifteen million, seventy-one thousand, four hundred".