2156200032 has 192 divisors, whose sum is σ = 6895010304. Its totient is φ = 575938560.

The previous prime is 2156200019. The next prime is 2156200069. The reversal of 2156200032 is 2300026512.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 2156199981 and 2156200008.

It is a congruent number.

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, 1975807 + ... + 1976897.

It is an arithmetic number, because the mean of its divisors is an integer number (35911512).

Almost surely, 2^2156200032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156200032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3447505152).

2156200032 is an abundant number, since it is smaller than the sum of its proper divisors (4738810272).

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

2156200032 is a wasteful number, since it uses less digits than its factorization.

2156200032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301 (or 1293 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2156200032 is about 46434.9010120620. The cubic root of 2156200032 is about 1291.9023336091.

Adding to 2156200032 its reverse (2300026512), we get a palindrome (4456226544).

The spelling of 2156200032 in words is "two billion, one hundred fifty-six million, two hundred thousand, thirty-two".