2153447208 has 80 divisors (see below), whose sum is σ = 6579999360. Its totient is φ = 652557600.

The previous prime is 2153447207. The next prime is 2153447237. The reversal of 2153447208 is 8027443512.

It is a happy number.

2153447208 is a `hidden beast` number, since 2 + 1 + 5 + 3 + 447 + 208 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (2153447203) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 143928 + ... + 158183.

It is an arithmetic number, because the mean of its divisors is an integer number (82249992).

Almost surely, 2^2153447208 is an apocalyptic number.

It is an amenable number.

2153447208 is an abundant number, since it is smaller than the sum of its proper divisors (4426552152).

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

2153447208 is a wasteful number, since it uses less digits than its factorization.

2153447208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302140 (or 302127 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 2153447208 is about 46405.2497892210. The cubic root of 2153447208 is about 1291.3523082172.

The spelling of 2153447208 in words is "two billion, one hundred fifty-three million, four hundred forty-seven thousand, two hundred eight".