43981002 has 128 divisors (see below), whose sum is σ = 113541120. Its totient is φ = 12519360.

The previous prime is 43980983. The next prime is 43981027. The reversal of 43981002 is 20018934.

43981002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×43981002³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 935743 + ... + 935789.

It is an arithmetic number, because the mean of its divisors is an integer number (887040).

Almost surely, 2^43981002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43981002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56770560).

43981002 is an abundant number, since it is smaller than the sum of its proper divisors (69560118).

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

43981002 is a wasteful number, since it uses less digits than its factorization.

43981002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 43981002 is about 6631.8173979687. The cubic root of 43981002 is about 352.9840159471.

Adding to 43981002 its reverse (20018934), we get a palindrome (63999936).

The spelling of 43981002 in words is "forty-three million, nine hundred eighty-one thousand, two".