40810040 has 32 divisors (see below), whose sum is σ = 92016000. Its totient is φ = 16289664.

The previous prime is 40810009. The next prime is 40810069. The reversal of 40810040 is 4001804.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27641 + ... + 29079.

It is an arithmetic number, because the mean of its divisors is an integer number (2875500).

Almost surely, 2^40810040 is an apocalyptic number.

40810040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40810040 is an abundant number, since it is smaller than the sum of its proper divisors (51205960).

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

40810040 is a wasteful number, since it uses less digits than its factorization.

40810040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159 (or 2155 counting only the distinct ones).

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

The square root of 40810040 is about 6388.2736322108. The cubic root of 40810040 is about 344.2883601597.

Adding to 40810040 its reverse (4001804), we get a palindrome (44811844).

The spelling of 40810040 in words is "forty million, eight hundred ten thousand, forty".