40908040 has 16 divisors (see below), whose sum is σ = 92043180. Its totient is φ = 16363200.

The previous prime is 40908013. The next prime is 40908041. The reversal of 40908040 is 4080904.

It can be written as a sum of positive squares in 2 ways, for example, as 37970244 + 2937796 = 6162^2 + 1714^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40907996 and 40908014.

It is not an unprimeable number, because it can be changed into a prime (40908041) 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, 511311 + ... + 511390.

Almost surely, 2^40908040 is an apocalyptic number.

40908040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40908040 is an abundant number, since it is smaller than the sum of its proper divisors (51135140).

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

40908040 is a wasteful number, since it uses less digits than its factorization.

40908040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022712 (or 1022708 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 40908040 is about 6395.9393367980. The cubic root of 40908040 is about 344.5637277544.

Adding to 40908040 its reverse (4080904), we get a palindrome (44988944).

The spelling of 40908040 in words is "forty million, nine hundred eight thousand, forty".