44287220 has 48 divisors (see below), whose sum is σ = 97660416. Its totient is φ = 16848000.

The previous prime is 44287211. The next prime is 44287241. The reversal of 44287220 is 2278244.

44287220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×44287220² = 3922715710656800, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 37235 + ... + 38405.

It is an arithmetic number, because the mean of its divisors is an integer number (2034592).

Almost surely, 2^44287220 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 44287220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48830208).

44287220 is an abundant number, since it is smaller than the sum of its proper divisors (53373196).

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

44287220 is a wasteful number, since it uses less digits than its factorization.

44287220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 44287220 is about 6654.8643862967. The cubic root of 44287220 is about 353.8013397999.

The spelling of 44287220 in words is "forty-four million, two hundred eighty-seven thousand, two hundred twenty".