40878660 has 24 divisors (see below), whose sum is σ = 114460416. Its totient is φ = 10900960.

The previous prime is 40878653. The next prime is 40878697. The reversal of 40878660 is 6687804.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340596 + ... + 340715.

It is an arithmetic number, because the mean of its divisors is an integer number (4769184).

Almost surely, 2^40878660 is an apocalyptic number.

It is an amenable number.

40878660 is an abundant number, since it is smaller than the sum of its proper divisors (73581756).

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

40878660 is a wasteful number, since it uses less digits than its factorization.

40878660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681323 (or 681321 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 40878660 is about 6393.6421545157. The cubic root of 40878660 is about 344.4812198758.

The spelling of 40878660 in words is "forty million, eight hundred seventy-eight thousand, six hundred sixty".