40281536 has 28 divisors (see below), whose sum is σ = 80205072. Its totient is φ = 20072448.

The previous prime is 40281529. The next prime is 40281581. The reversal of 40281536 is 63518204.

It is a junction number, because it is equal to n+sod(n) for n = 40281499 and 40281508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21701 + ... + 23483.

Almost surely, 2^40281536 is an apocalyptic number.

It is an amenable number.

40281536 is a deficient number, since it is larger than the sum of its proper divisors (39923536).

40281536 is a wasteful number, since it uses less digits than its factorization.

40281536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148 (or 2138 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 40281536 is about 6346.7736685658. The cubic root of 40281536 is about 342.7956805170.

The spelling of 40281536 in words is "forty million, two hundred eighty-one thousand, five hundred thirty-six".