40881612 has 12 divisors (see below), whose sum is σ = 95390456. Its totient is φ = 13627200.

The previous prime is 40881611. The next prime is 40881623. The reversal of 40881612 is 21618804.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 40881612.

It is not an unprimeable number, because it can be changed into a prime (40881611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703389 + ... + 1703412.

Almost surely, 2^40881612 is an apocalyptic number.

It is an amenable number.

40881612 is an abundant number, since it is smaller than the sum of its proper divisors (54508844).

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

40881612 is a wasteful number, since it uses less digits than its factorization.

40881612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406808 (or 3406806 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 40881612 is about 6393.8730046819. The cubic root of 40881612 is about 344.4895117660.

It can be divided in two parts, 4088 and 1612, that multiplied together give a palindrome (6589856).

The spelling of 40881612 in words is "forty million, eight hundred eighty-one thousand, six hundred twelve".