40581356 has 24 divisors (see below), whose sum is σ = 74210304. Its totient is φ = 19394640.

The previous prime is 40581337. The next prime is 40581403. The reversal of 40581356 is 65318504.

It is a happy 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, 8321 + ... + 12263.

It is an arithmetic number, because the mean of its divisors is an integer number (3092096).

Almost surely, 2^40581356 is an apocalyptic number.

It is an amenable number.

40581356 is a deficient number, since it is larger than the sum of its proper divisors (33628948).

40581356 is a wasteful number, since it uses less digits than its factorization.

40581356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4061 (or 4059 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 40581356 is about 6370.3497549193. The cubic root of 40581356 is about 343.6440680309.

The spelling of 40581356 in words is "forty million, five hundred eighty-one thousand, three hundred fifty-six".