2154354220 has 24 divisors (see below), whose sum is σ = 4531502304. Its totient is φ = 860340096.

The previous prime is 2154354199. The next prime is 2154354227. The reversal of 2154354220 is 224534512.

It is not an unprimeable number, because it can be changed into a prime (2154354227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74952 + ... + 99631.

It is an arithmetic number, because the mean of its divisors is an integer number (188812596).

Almost surely, 2^2154354220 is an apocalyptic number.

2154354220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154354220 is an abundant number, since it is smaller than the sum of its proper divisors (2377148084).

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

2154354220 is a wasteful number, since it uses less digits than its factorization.

2154354220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175209 (or 175207 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2154354220 is about 46415.0214908924. The cubic root of 2154354220 is about 1291.5335846424.

Adding to 2154354220 its reverse (224534512), we get a palindrome (2378888732).

The spelling of 2154354220 in words is "two billion, one hundred fifty-four million, three hundred fifty-four thousand, two hundred twenty".