2154212800 has 168 divisors, whose sum is σ = 5808177360. Its totient is φ = 782745600.

The previous prime is 2154212789. The next prime is 2154212803. The reversal of 2154212800 is 82124512.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154212803) 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, 787435 + ... + 790165.

Almost surely, 2^2154212800 is an apocalyptic number.

2154212800 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 2154212800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2904088680).

2154212800 is an abundant number, since it is smaller than the sum of its proper divisors (3653964560).

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

2154212800 is a wasteful number, since it uses less digits than its factorization.

2154212800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799 (or 2784 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 2154212800 is about 46413.4980366703. The cubic root of 2154212800 is about 1291.5053236328.

The spelling of 2154212800 in words is "two billion, one hundred fifty-four million, two hundred twelve thousand, eight hundred".