2159396928 has 224 divisors, whose sum is σ = 6914001920. Its totient is φ = 656916480.

The previous prime is 2159396917. The next prime is 2159396947. The reversal of 2159396928 is 8296939512.

It is a happy number.

2159396928 is a `hidden beast` number, since 21 + 593 + 9 + 6 + 9 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 2178513 + ... + 2179503.

It is an arithmetic number, because the mean of its divisors is an integer number (30866080).

Almost surely, 2^2159396928 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 2159396928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3457000960).

2159396928 is an abundant number, since it is smaller than the sum of its proper divisors (4754604992).

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

2159396928 is a wasteful number, since it uses less digits than its factorization.

2159396928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 1106 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 2159396928 is about 46469.3116798603. The cubic root of 2159396928 is about 1292.5404991880.

The spelling of 2159396928 in words is "two billion, one hundred fifty-nine million, three hundred ninety-six thousand, nine hundred twenty-eight".