41981440 has 120 divisors (see below), whose sum is σ = 108618048. Its totient is φ = 15544320.

The previous prime is 41981413. The next prime is 41981453. The reversal of 41981440 is 4418914.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1354225 + ... + 1354255.

Almost surely, 2^41981440 is an apocalyptic number.

41981440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 41981440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54309024).

41981440 is an abundant number, since it is smaller than the sum of its proper divisors (66636608).

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

41981440 is an equidigital number, since it uses as much as digits as its factorization.

41981440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 41981440 is about 6479.3086050905. The cubic root of 41981440 is about 347.5514545204.

The spelling of 41981440 in words is "forty-one million, nine hundred eighty-one thousand, four hundred forty".