40206536 has 8 divisors (see below), whose sum is σ = 75387270. Its totient is φ = 20103264.

The previous prime is 40206533. The next prime is 40206539. The reversal of 40206536 is 63560204.

It is an interprime number because it is at equal distance from previous prime (40206533) and next prime (40206539).

It can be written as a sum of positive squares in only one way, i.e., 28026436 + 12180100 = 5294^2 + 3490^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40206533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2512901 + ... + 2512916.

Almost surely, 2^40206536 is an apocalyptic number.

It is an amenable number.

40206536 is a deficient number, since it is larger than the sum of its proper divisors (35180734).

40206536 is a wasteful number, since it uses less digits than its factorization.

40206536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5025823 (or 5025819 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 40206536 is about 6340.8624019135. The cubic root of 40206536 is about 342.5827984594.

The spelling of 40206536 in words is "forty million, two hundred six thousand, five hundred thirty-six".