2123893800 has 288 divisors, whose sum is σ = 8292772800. Its totient is φ = 477066240.

The previous prime is 2123893789. The next prime is 2123893801. The reversal of 2123893800 is 83983212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2123893801) 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 71 ways as a sum of consecutive naturals, for example, 741972 + ... + 744828.

It is an arithmetic number, because the mean of its divisors is an integer number (28794350).

Almost surely, 2^2123893800 is an apocalyptic number.

2123893800 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 2123893800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4146386400).

2123893800 is an abundant number, since it is smaller than the sum of its proper divisors (6168879000).

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

2123893800 is a wasteful number, since it uses less digits than its factorization.

2123893800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945 (or 2933 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2123893800 is about 46085.7223009470. The cubic root of 2123893800 is about 1285.4176702001.

The spelling of 2123893800 in words is "two billion, one hundred twenty-three million, eight hundred ninety-three thousand, eight hundred".