40081104 has 120 divisors (see below), whose sum is σ = 135794880. Its totient is φ = 10773504.

The previous prime is 40081099. The next prime is 40081141. The reversal of 40081104 is 40118004.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 15967 + ... + 18305.

It is an arithmetic number, because the mean of its divisors is an integer number (1131624).

Almost surely, 2^40081104 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 40081104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67897440).

40081104 is an abundant number, since it is smaller than the sum of its proper divisors (95713776).

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

40081104 is a wasteful number, since it uses less digits than its factorization.

40081104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377 (or 2368 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 40081104 is about 6330.9639076526. The cubic root of 40081104 is about 342.2261764378.

Adding to 40081104 its reverse (40118004), we get a palindrome (80199108).

The spelling of 40081104 in words is "forty million, eighty-one thousand, one hundred four".