2287278444 has 96 divisors (see below), whose sum is σ = 6141542400. Its totient is φ = 655248960.

The previous prime is 2287278407. The next prime is 2287278449. The reversal of 2287278444 is 4448727822.

It is a super-2 number, since 2×2287278444² = 10463285360774122272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2287278393 and 2287278402.

It is not an unprimeable number, because it can be changed into a prime (2287278449) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2103669 + ... + 2104755.

It is an arithmetic number, because the mean of its divisors is an integer number (63974400).

Almost surely, 2^2287278444 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 2287278444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3070771200).

2287278444 is an abundant number, since it is smaller than the sum of its proper divisors (3854263956).

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

2287278444 is a wasteful number, since it uses less digits than its factorization.

2287278444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963 (or 1961 counting only the distinct ones).

The product of its digits is 1605632, while the sum is 48.

The square root of 2287278444 is about 47825.4999346583. The cubic root of 2287278444 is about 1317.5679206739.

The spelling of 2287278444 in words is "two billion, two hundred eighty-seven million, two hundred seventy-eight thousand, four hundred forty-four".