40851780 has 48 divisors (see below), whose sum is σ = 114839424. Its totient is φ = 10850560.

The previous prime is 40851779. The next prime is 40851781. The reversal of 40851780 is 8715804.

It is a happy number.

40851780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40851779) and next prime (40851781).

It is not an unprimeable number, because it can be changed into a prime (40851781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15649 + ... + 18071.

It is an arithmetic number, because the mean of its divisors is an integer number (2392488).

Almost surely, 2^40851780 is an apocalyptic number.

It is an amenable number.

40851780 is an abundant number, since it is smaller than the sum of its proper divisors (73987644).

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

40851780 is a wasteful number, since it uses less digits than its factorization.

40851780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2716 (or 2714 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 40851780 is about 6391.5397205994. The cubic root of 40851780 is about 344.4056981120.

The spelling of 40851780 in words is "forty million, eight hundred fifty-one thousand, seven hundred eighty".