40412544 has 128 divisors (see below), whose sum is σ = 117504000. Its totient is φ = 12257280.

The previous prime is 40412531. The next prime is 40412549. The reversal of 40412544 is 44521404.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40412549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211489 + ... + 211679.

It is an arithmetic number, because the mean of its divisors is an integer number (918000).

Almost surely, 2^40412544 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 40412544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58752000).

40412544 is an abundant number, since it is smaller than the sum of its proper divisors (77091456).

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

40412544 is a wasteful number, since it uses less digits than its factorization.

40412544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 40412544 is about 6357.0861249475. The cubic root of 40412544 is about 343.1669041825.

Adding to 40412544 its reverse (44521404), we get a palindrome (84933948).

The spelling of 40412544 in words is "forty million, four hundred twelve thousand, five hundred forty-four".