41981436 has 72 divisors (see below), whose sum is σ = 126626640. Its totient is φ = 11993184.

The previous prime is 41981413. The next prime is 41981453. The reversal of 41981436 is 63418914.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 41981436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1326 + ... + 9258.

Almost surely, 2^41981436 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 41981436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63313320).

41981436 is an abundant number, since it is smaller than the sum of its proper divisors (84645204).

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

41981436 is a wasteful number, since it uses less digits than its factorization.

41981436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7960 (or 7945 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 41981436 is about 6479.3082964156. The cubic root of 41981436 is about 347.5514434821.

The spelling of 41981436 in words is "forty-one million, nine hundred eighty-one thousand, four hundred thirty-six".