44542240 has 48 divisors (see below), whose sum is σ = 105924672. Its totient is φ = 17699584.

The previous prime is 44542217. The next prime is 44542249. The reversal of 44542240 is 4224544.

It is a happy number.

It is a super-2 number, since 2×44542240² = 3968022288435200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44542249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25887 + ... + 27553.

It is an arithmetic number, because the mean of its divisors is an integer number (2206764).

Almost surely, 2^44542240 is an apocalyptic number.

44542240 is a gapful number since it is divisible by the number (40) 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 44542240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52962336).

44542240 is an abundant number, since it is smaller than the sum of its proper divisors (61382432).

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

44542240 is a wasteful number, since it uses less digits than its factorization.

44542240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849 (or 1841 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 44542240 is about 6673.9973029662. The cubic root of 44542240 is about 354.4791409457.

Adding to 44542240 its reverse (4224544), we get a palindrome (48766784).

The spelling of 44542240 in words is "forty-four million, five hundred forty-two thousand, two hundred forty".