2154105200 has 120 divisors (see below), whose sum is σ = 5665533216. Its totient is φ = 782208000.

The previous prime is 2154105179. The next prime is 2154105203. The reversal of 2154105200 is 25014512.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154105203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313805 + ... + 320595.

Almost surely, 2^2154105200 is an apocalyptic number.

2154105200 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 2154105200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2832766608).

2154105200 is an abundant number, since it is smaller than the sum of its proper divisors (3511428016).

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

2154105200 is a wasteful number, since it uses less digits than its factorization.

2154105200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6883 (or 6872 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2154105200 is about 46412.3388766393. The cubic root of 2154105200 is about 1291.4838202965.

Adding to 2154105200 its reverse (25014512), we get a palindrome (2179119712).

The spelling of 2154105200 in words is "two billion, one hundred fifty-four million, one hundred five thousand, two hundred".