2157863600 has 60 divisors (see below), whose sum is σ = 5214401376. Its totient is φ = 858128640.

The previous prime is 2157863551. The next prime is 2157863623. The reversal of 2157863600 is 63687512.

2157863600 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53609 + ... + 84791.

Almost surely, 2^2157863600 is an apocalyptic number.

2157863600 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 2157863600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2607200688).

2157863600 is an abundant number, since it is smaller than the sum of its proper divisors (3056537776).

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

2157863600 is a wasteful number, since it uses less digits than its factorization.

2157863600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31374 (or 31363 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2157863600 is about 46452.8104639536. The cubic root of 2157863600 is about 1292.2344943351.

The spelling of 2157863600 in words is "two billion, one hundred fifty-seven million, eight hundred sixty-three thousand, six hundred".