2205215406 has 48 divisors (see below), whose sum is σ = 4853191200. Its totient is φ = 723587904.

The previous prime is 2205215399. The next prime is 2205215407. The reversal of 2205215406 is 6045125022.

2205215406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2205215406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205215407) 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, 304455 + ... + 311613.

It is an arithmetic number, because the mean of its divisors is an integer number (101108150).

Almost surely, 2^2205215406 is an apocalyptic number.

2205215406 is an abundant number, since it is smaller than the sum of its proper divisors (2647975794).

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

2205215406 is a wasteful number, since it uses less digits than its factorization.

2205215406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7433 (or 7430 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2205215406 is about 46959.7211022382. The cubic root of 2205215406 is about 1301.6183800908.

The spelling of 2205215406 in words is "two billion, two hundred five million, two hundred fifteen thousand, four hundred six".