44136540 has 144 divisors (see below), whose sum is σ = 159763968. Its totient is φ = 9643392.

The previous prime is 44136527. The next prime is 44136551. The reversal of 44136540 is 4563144.

44136540 is a `hidden beast` number, since 4 + 4 + 1 + 3 + 654 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28219 + ... + 29741.

It is an arithmetic number, because the mean of its divisors is an integer number (1109472).

Almost surely, 2^44136540 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 44136540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79881984).

44136540 is an abundant number, since it is smaller than the sum of its proper divisors (115627428).

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

44136540 is a wasteful number, since it uses less digits than its factorization.

44136540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568 (or 1563 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 44136540 is about 6643.5336982663. The cubic root of 44136540 is about 353.3996335377.

Adding to 44136540 its reverse (4563144), we get a palindrome (48699684).

The spelling of 44136540 in words is "forty-four million, one hundred thirty-six thousand, five hundred forty".