40403136 has 56 divisors (see below), whose sum is σ = 107639104. Its totient is φ = 13374720.

The previous prime is 40403123. The next prime is 40403147. The reversal of 40403136 is 63130404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30651 + ... + 31941.

Almost surely, 2^40403136 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 40403136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53819552).

40403136 is an abundant number, since it is smaller than the sum of its proper divisors (67235968).

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

40403136 is a wasteful number, since it uses less digits than its factorization.

40403136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469 (or 1459 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 40403136 is about 6356.3461202172. The cubic root of 40403136 is about 343.1402724779.

The spelling of 40403136 in words is "forty million, four hundred three thousand, one hundred thirty-six".