40081436 has 12 divisors (see below), whose sum is σ = 71853600. Its totient is φ = 19551840.

The previous prime is 40081411. The next prime is 40081441. The reversal of 40081436 is 63418004.

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, 122036 + ... + 122363.

It is an arithmetic number, because the mean of its divisors is an integer number (5987800).

Almost surely, 2^40081436 is an apocalyptic number.

It is an amenable number.

40081436 is a deficient number, since it is larger than the sum of its proper divisors (31772164).

40081436 is a wasteful number, since it uses less digits than its factorization.

40081436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244444 (or 244442 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 40081436 is about 6330.9901279342. The cubic root of 40081436 is about 342.2271213450.

The spelling of 40081436 in words is "forty million, eighty-one thousand, four hundred thirty-six".