40531982 has 16 divisors (see below), whose sum is σ = 61471872. Its totient is φ = 20043000.

The previous prime is 40531979. The next prime is 40531993. The reversal of 40531982 is 28913504.

It is a congruent number.

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, 131873 + ... + 132179.

It is an arithmetic number, because the mean of its divisors is an integer number (3841992).

Almost surely, 2^40531982 is an apocalyptic number.

40531982 is a deficient number, since it is larger than the sum of its proper divisors (20939890).

40531982 is a wasteful number, since it uses less digits than its factorization.

40531982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 40531982 is about 6366.4732780402. The cubic root of 40531982 is about 343.5046446632.

The spelling of 40531982 in words is "forty million, five hundred thirty-one thousand, nine hundred eighty-two".