2154023322 has 64 divisors (see below), whose sum is σ = 4809369600. Its totient is φ = 637678080.

The previous prime is 2154023303. The next prime is 2154023323. The reversal of 2154023322 is 2233204512.

It is a junction number, because it is equal to n+sod(n) for n = 2154023292 and 2154023301.

It is not an unprimeable number, because it can be changed into a prime (2154023323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503629 + ... + 507887.

It is an arithmetic number, because the mean of its divisors is an integer number (75146400).

Almost surely, 2^2154023322 is an apocalyptic number.

2154023322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154023322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2404684800).

2154023322 is an abundant number, since it is smaller than the sum of its proper divisors (2655346278).

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

2154023322 is a wasteful number, since it uses less digits than its factorization.

2154023322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4451.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2154023322 is about 46411.4567967867. The cubic root of 2154023322 is about 1291.4674568970.

Adding to 2154023322 its reverse (2233204512), we get a palindrome (4387227834).

The spelling of 2154023322 in words is "two billion, one hundred fifty-four million, twenty-three thousand, three hundred twenty-two".