40136835 has 16 divisors (see below), whose sum is σ = 67599360. Its totient is φ = 20279520.

The previous prime is 40136821. The next prime is 40136839. The reversal of 40136835 is 53863104.

It is not a de Polignac number, because 40136835 - 2¹⁰ = 40135811 is a prime.

It is a super-2 number, since 2×40136835² = 3221931047634450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40136839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70131 + ... + 70700.

It is an arithmetic number, because the mean of its divisors is an integer number (4224960).

Almost surely, 2^40136835 is an apocalyptic number.

40136835 is a deficient number, since it is larger than the sum of its proper divisors (27462525).

40136835 is a wasteful number, since it uses less digits than its factorization.

40136835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140858.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 40136835 is about 6335.3638411697. The cubic root of 40136835 is about 342.3847197586.

Adding to 40136835 its reverse (53863104), we get a palindrome (93999939).

The spelling of 40136835 in words is "forty million, one hundred thirty-six thousand, eight hundred thirty-five".