40801040 has 40 divisors (see below), whose sum is σ = 108415680. Its totient is φ = 13988736.

The previous prime is 40801039. The next prime is 40801049. The reversal of 40801040 is 4010804.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (40801049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35870 + ... + 36989.

It is an arithmetic number, because the mean of its divisors is an integer number (2710392).

Almost surely, 2^40801040 is an apocalyptic number.

40801040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40801040 is an abundant number, since it is smaller than the sum of its proper divisors (67614640).

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

40801040 is a wasteful number, since it uses less digits than its factorization.

40801040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72879 (or 72873 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 40801040 is about 6387.5691777076. The cubic root of 40801040 is about 344.2630492064.

Adding to 40801040 its reverse (4010804), we get a palindrome (44811844).

The spelling of 40801040 in words is "forty million, eight hundred one thousand, forty".