40438680 has 32 divisors (see below), whose sum is σ = 121316400. Its totient is φ = 10783616.

The previous prime is 40438667. The next prime is 40438681. The reversal of 40438680 is 8683404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40438681) 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, 168375 + ... + 168614.

Almost surely, 2^40438680 is an apocalyptic number.

40438680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40438680 is an abundant number, since it is smaller than the sum of its proper divisors (80877720).

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

40438680 is a wasteful number, since it uses less digits than its factorization.

40438680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337003 (or 336999 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 40438680 is about 6359.1414514854. The cubic root of 40438680 is about 343.2408670045.

The spelling of 40438680 in words is "forty million, four hundred thirty-eight thousand, six hundred eighty".