2154430020 has 96 divisors (see below), whose sum is σ = 6173532288. Its totient is φ = 561226752.

The previous prime is 2154430001. The next prime is 2154430049. The reversal of 2154430020 is 200344512.

It is a super-2 number, since 2×2154430020² = 9283137422154400800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 466362 + ... + 470958.

It is an arithmetic number, because the mean of its divisors is an integer number (64307628).

Almost surely, 2^2154430020 is an apocalyptic number.

2154430020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154430020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3086766144).

2154430020 is an abundant number, since it is smaller than the sum of its proper divisors (4019102268).

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

2154430020 is a wasteful number, since it uses less digits than its factorization.

2154430020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4789 (or 4787 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2154430020 is about 46415.8380297071. The cubic root of 2154430020 is about 1291.5487318107.

Adding to 2154430020 its reverse (200344512), we get a palindrome (2354774532).

The spelling of 2154430020 in words is "two billion, one hundred fifty-four million, four hundred thirty thousand, twenty".