2145336256 has 56 divisors (see below), whose sum is σ = 4910063840. Its totient is φ = 910973952.

The previous prime is 2145336241. The next prime is 2145336283. The reversal of 2145336256 is 6526335412.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26866 + ... + 70798.

Almost surely, 2^2145336256 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 2145336256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2455031920).

2145336256 is an abundant number, since it is smaller than the sum of its proper divisors (2764727584).

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

2145336256 is a wasteful number, since it uses less digits than its factorization.

2145336256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44061 (or 44051 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The square root of 2145336256 is about 46317.7747306582. The cubic root of 2145336256 is about 1289.7289769755.

The spelling of 2145336256 in words is "two billion, one hundred forty-five million, three hundred thirty-six thousand, two hundred fifty-six".