2215523320 has 16 divisors (see below), whose sum is σ = 4984927560. Its totient is φ = 886209312.

The previous prime is 2215523269. The next prime is 2215523327. The reversal of 2215523320 is 233255122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215523327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27694002 + ... + 27694081.

Almost surely, 2^2215523320 is an apocalyptic number.

2215523320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215523320 is an abundant number, since it is smaller than the sum of its proper divisors (2769404240).

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

2215523320 is a wasteful number, since it uses less digits than its factorization.

2215523320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55388094 (or 55388090 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2215523320 is about 47069.3458633111. The cubic root of 2215523320 is about 1303.6432947953.

Adding to 2215523320 its reverse (233255122), we get a palindrome (2448778442).

The spelling of 2215523320 in words is "two billion, two hundred fifteen million, five hundred twenty-three thousand, three hundred twenty".