40221136 has 40 divisors (see below), whose sum is σ = 81494784. Its totient is φ = 19207680.

The previous prime is 40221131. The next prime is 40221161. The reversal of 40221136 is 63112204.

40221136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40221136² = 3235479562260992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221131) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 40680 + ... + 41656.

Almost surely, 2^40221136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40221136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40747392).

40221136 is an abundant number, since it is smaller than the sum of its proper divisors (41273648).

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

40221136 is a wasteful number, since it uses less digits than its factorization.

40221136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1093 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 40221136 is about 6342.0135603765. The cubic root of 40221136 is about 342.6242602386.

The spelling of 40221136 in words is "forty million, two hundred twenty-one thousand, one hundred thirty-six".