40581044 has 48 divisors (see below), whose sum is σ = 83462400. Its totient is φ = 16907520.

The previous prime is 40581041. The next prime is 40581053. The reversal of 40581044 is 44018504.

It is a super-2 number, since 2×40581044² = 3293642264259872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40581041) 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, 272282 + ... + 272430.

It is an arithmetic number, because the mean of its divisors is an integer number (1738800).

Almost surely, 2^40581044 is an apocalyptic number.

It is an amenable number.

40581044 is an abundant number, since it is smaller than the sum of its proper divisors (42881356).

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

40581044 is a wasteful number, since it uses less digits than its factorization.

40581044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 40581044 is about 6370.3252664209. The cubic root of 40581044 is about 343.6431873537.

Adding to 40581044 its reverse (44018504), we get a palindrome (84599548).

The spelling of 40581044 in words is "forty million, five hundred eighty-one thousand, forty-four".