40650040 has 32 divisors (see below), whose sum is σ = 91712880. Its totient is φ = 16215552.

The previous prime is 40650023. The next prime is 40650041. The reversal of 40650040 is 4005604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40650041) 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, 16147 + ... + 18493.

Almost surely, 2^40650040 is an apocalyptic number.

40650040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40650040 is an abundant number, since it is smaller than the sum of its proper divisors (51062840).

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

40650040 is a wasteful number, since it uses less digits than its factorization.

40650040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791 (or 2787 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40650040 is about 6375.7383886104. The cubic root of 40650040 is about 343.8378314406.

Adding to 40650040 its reverse (4005604), we get a palindrome (44655644).

The spelling of 40650040 in words is "forty million, six hundred fifty thousand, forty".