40208888240 has 40 divisors (see below), whose sum is σ = 98984825280. Its totient is φ = 15137463296.

The previous prime is 40208888183. The next prime is 40208888243. The reversal of 40208888240 is 4288880204.

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

It is a junction number, because it is equal to n+sod(n) for n = 40208888191 and 40208888200.

It is not an unprimeable number, because it can be changed into a prime (40208888243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14781320 + ... + 14784039.

It is an arithmetic number, because the mean of its divisors is an integer number (2474620632).

Almost surely, 2^40208888240 is an apocalyptic number.

40208888240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40208888240 is an abundant number, since it is smaller than the sum of its proper divisors (58775937040).

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

40208888240 is a wasteful number, since it uses less digits than its factorization.

40208888240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29565389 (or 29565383 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 44.

The spelling of 40208888240 in words is "forty billion, two hundred eight million, eight hundred eighty-eight thousand, two hundred forty".