40881936 has 40 divisors (see below), whose sum is σ = 106649920. Its totient is φ = 13493376.

The previous prime is 40881913. The next prime is 40881937. The reversal of 40881936 is 63918804.

It is a super-2 number, since 2×40881936² = 3342665382216192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40881894 and 40881903.

It is not an unprimeable number, because it can be changed into a prime (40881937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810 + ... + 9078.

It is an arithmetic number, because the mean of its divisors is an integer number (2666248).

Almost surely, 2^40881936 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 40881936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53324960).

40881936 is an abundant number, since it is smaller than the sum of its proper divisors (65767984).

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

40881936 is a wasteful number, since it uses less digits than its factorization.

40881936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8383 (or 8377 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 40881936 is about 6393.8983413877. The cubic root of 40881936 is about 344.4904218272.

The spelling of 40881936 in words is "forty million, eight hundred eighty-one thousand, nine hundred thirty-six".