40582881 has 6 divisors (see below), whose sum is σ = 58619730. Its totient is φ = 27055248.

The previous prime is 40582877. The next prime is 40582889. The reversal of 40582881 is 18828504.

It can be written as a sum of positive squares in only one way, i.e., 37638225 + 2944656 = 6135^2 + 1716^2 .

It is not a de Polignac number, because 40582881 - 2² = 40582877 is a prime.

It is a super-2 number, since 2×40582881² = 3293940460520322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40582889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2254596 + ... + 2254613.

It is an arithmetic number, because the mean of its divisors is an integer number (9769955).

Almost surely, 2^40582881 is an apocalyptic number.

It is an amenable number.

40582881 is a deficient number, since it is larger than the sum of its proper divisors (18036849).

40582881 is a wasteful number, since it uses less digits than its factorization.

40582881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509215 (or 4509212 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 40582881 is about 6370.4694489496. The cubic root of 40582881 is about 343.6483725580.

The spelling of 40582881 in words is "forty million, five hundred eighty-two thousand, eight hundred eighty-one".