2261244160 has 216 divisors, whose sum is σ = 6509534976. Its totient is φ = 749629440.

The previous prime is 2261244151. The next prime is 2261244203. The reversal of 2261244160 is 614421622.

It is a super-2 number, since 2×2261244160² = 10226450302268211200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1943739 + ... + 1944901.

It is an arithmetic number, because the mean of its divisors is an integer number (30136736).

Almost surely, 2^2261244160 is an apocalyptic number.

2261244160 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 2261244160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3254767488).

2261244160 is an abundant number, since it is smaller than the sum of its proper divisors (4248290816).

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

2261244160 is a wasteful number, since it uses less digits than its factorization.

2261244160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2261244160 is about 47552.5410467201. The cubic root of 2261244160 is about 1312.5498884741.

Adding to 2261244160 its reverse (614421622), we get a palindrome (2875665782).

The spelling of 2261244160 in words is "two billion, two hundred sixty-one million, two hundred forty-four thousand, one hundred sixty".