40878720 has 192 divisors, whose sum is σ = 145117440. Its totient is φ = 10598400.

The previous prime is 40878713. The next prime is 40878737. The reversal of 40878720 is 2787804.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 270645 + ... + 270795.

It is an arithmetic number, because the mean of its divisors is an integer number (755820).

Almost surely, 2^40878720 is an apocalyptic number.

40878720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40878720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72558720).

40878720 is an abundant number, since it is smaller than the sum of its proper divisors (104238720).

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

40878720 is a wasteful number, since it uses less digits than its factorization.

40878720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 40878720 is about 6393.6468466752. The cubic root of 40878720 is about 344.4813884141.

The spelling of 40878720 in words is "forty million, eight hundred seventy-eight thousand, seven hundred twenty".