2144279256 has 128 divisors (see below), whose sum is σ = 6433344000. Its totient is φ = 582607872.

The previous prime is 2144279231. The next prime is 2144279281. The reversal of 2144279256 is 6529724412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2144279231) and next prime (2144279281).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 323140 + ... + 329708.

It is an arithmetic number, because the mean of its divisors is an integer number (50260500).

Almost surely, 2^2144279256 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 2144279256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3216672000).

2144279256 is an abundant number, since it is smaller than the sum of its proper divisors (4289064744).

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

2144279256 is a wasteful number, since it uses less digits than its factorization.

2144279256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681 (or 6677 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 2144279256 is about 46306.3630184881. The cubic root of 2144279256 is about 1289.5171271276.

The spelling of 2144279256 in words is "two billion, one hundred forty-four million, two hundred seventy-nine thousand, two hundred fifty-six".