2155926960 has 240 divisors, whose sum is σ = 8314824960. Its totient is φ = 495106560.

The previous prime is 2155926943. The next prime is 2155927001. The reversal of 2155926960 is 696295512.

It is a happy number.

2155926960 is a `hidden beast` number, since 2 + 1 + 559 + 2 + 6 + 96 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143317 + ... + 157643.

It is an arithmetic number, because the mean of its divisors is an integer number (34645104).

Almost surely, 2^2155926960 is an apocalyptic number.

2155926960 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 2155926960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4157412480).

2155926960 is an abundant number, since it is smaller than the sum of its proper divisors (6158898000).

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

2155926960 is a wasteful number, since it uses less digits than its factorization.

2155926960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14376 (or 14367 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 2155926960 is about 46431.9605444353. The cubic root of 2155926960 is about 1291.8477936402.

The spelling of 2155926960 in words is "two billion, one hundred fifty-five million, nine hundred twenty-six thousand, nine hundred sixty".