2153206320 has 40 divisors (see below), whose sum is σ = 6674940336. Its totient is φ = 574188288.

The previous prime is 2153206309. The next prime is 2153206343. The reversal of 2153206320 is 236023512.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4485607 + ... + 4486086.

Almost surely, 2^2153206320 is an apocalyptic number.

2153206320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153206320 is an abundant number, since it is smaller than the sum of its proper divisors (4521734016).

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

2153206320 is a wasteful number, since it uses less digits than its factorization.

2153206320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8971709 (or 8971703 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 2153206320 is about 46402.6542344293. The cubic root of 2153206320 is about 1291.3041555199.

Adding to 2153206320 its reverse (236023512), we get a palindrome (2389229832).

The spelling of 2153206320 in words is "two billion, one hundred fifty-three million, two hundred six thousand, three hundred twenty".