44257140 has 72 divisors (see below), whose sum is σ = 136176768. Its totient is φ = 11632320.

The previous prime is 44257111. The next prime is 44257141. The reversal of 44257140 is 4175244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44257141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11049 + ... + 14511.

It is an arithmetic number, because the mean of its divisors is an integer number (1891344).

Almost surely, 2^44257140 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 44257140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68088384).

44257140 is an abundant number, since it is smaller than the sum of its proper divisors (91919628).

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

44257140 is a wasteful number, since it uses less digits than its factorization.

44257140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549 (or 3544 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 44257140 is about 6652.6040014418. The cubic root of 44257140 is about 353.7212207147.

The spelling of 44257140 in words is "forty-four million, two hundred fifty-seven thousand, one hundred forty".