40861872 has 30 divisors (see below), whose sum is σ = 114356892. Its totient is φ = 13620576.

The previous prime is 40861867. The next prime is 40861879. The reversal of 40861872 is 27816804.

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

It is not an unprimeable number, because it can be changed into a prime (40861879) 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 5 ways as a sum of consecutive naturals, for example, 141738 + ... + 142025.

Almost surely, 2^40861872 is an apocalyptic number.

It is an amenable number.

40861872 is an abundant number, since it is smaller than the sum of its proper divisors (73495020).

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

40861872 is a wasteful number, since it uses less digits than its factorization.

40861872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283777 (or 283768 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 40861872 is about 6392.3291529770. The cubic root of 40861872 is about 344.4340563715.

The spelling of 40861872 in words is "forty million, eight hundred sixty-one thousand, eight hundred seventy-two".