40543980 has 48 divisors (see below), whose sum is σ = 120204000. Its totient is φ = 10175488.

The previous prime is 40543973. The next prime is 40543991. The reversal of 40543980 is 8934504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18855 + ... + 20894.

It is an arithmetic number, because the mean of its divisors is an integer number (2504250).

Almost surely, 2^40543980 is an apocalyptic number.

It is an amenable number.

40543980 is an abundant number, since it is smaller than the sum of its proper divisors (79660020).

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

40543980 is a wasteful number, since it uses less digits than its factorization.

40543980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39778 (or 39776 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 40543980 is about 6367.4154882495. The cubic root of 40543980 is about 343.5385352843.

The spelling of 40543980 in words is "forty million, five hundred forty-three thousand, nine hundred eighty".