40221536 has 12 divisors (see below), whose sum is σ = 79186212. Its totient is φ = 20110752.

The previous prime is 40221529. The next prime is 40221557. The reversal of 40221536 is 63512204.

40221536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 628430 + ... + 628493.

It is an arithmetic number, because the mean of its divisors is an integer number (6598851).

Almost surely, 2^40221536 is an apocalyptic number.

It is an amenable number.

40221536 is a deficient number, since it is larger than the sum of its proper divisors (38964676).

40221536 is a wasteful number, since it uses less digits than its factorization.

40221536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256933 (or 1256925 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 40221536 is about 6342.0450960238. The cubic root of 40221536 is about 342.6253960366.

The spelling of 40221536 in words is "forty million, two hundred twenty-one thousand, five hundred thirty-six".