40806536 has 8 divisors (see below), whose sum is σ = 76512270. Its totient is φ = 20403264.

The previous prime is 40806517. The next prime is 40806553. The reversal of 40806536 is 63560804.

It can be written as a sum of positive squares in only one way, i.e., 33570436 + 7236100 = 5794^2 + 2690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 2550401 + ... + 2550416.

Almost surely, 2^40806536 is an apocalyptic number.

It is an amenable number.

40806536 is a deficient number, since it is larger than the sum of its proper divisors (35705734).

40806536 is a wasteful number, since it uses less digits than its factorization.

40806536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100823 (or 5100819 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 40806536 is about 6387.9993738259. Note that the first 3 decimals coincide. The cubic root of 40806536 is about 344.2785062043.

The spelling of 40806536 in words is "forty million, eight hundred six thousand, five hundred thirty-six".