40543278 has 16 divisors (see below), whose sum is σ = 81285120. Its totient is φ = 13481336.

The previous prime is 40543271. The next prime is 40543297. The reversal of 40543278 is 87234504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40543271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5550 + ... + 10577.

It is an arithmetic number, because the mean of its divisors is an integer number (5080320).

Almost surely, 2^40543278 is an apocalyptic number.

40543278 is an abundant number, since it is smaller than the sum of its proper divisors (40741842).

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

40543278 is a wasteful number, since it uses less digits than its factorization.

40543278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16551.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 40543278 is about 6367.3603636044. The cubic root of 40543278 is about 343.5365525366.

The spelling of 40543278 in words is "forty million, five hundred forty-three thousand, two hundred seventy-eight".