43696138 has 16 divisors (see below), whose sum is σ = 66512160. Its totient is φ = 21527856.

The previous prime is 43696111. The next prime is 43696139. The reversal of 43696138 is 83169634.

It is a super-2 number, since 2×43696138² = 3818704952230088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43696138.

It is not an unprimeable number, because it can be changed into a prime (43696139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49045 + ... + 49927.

It is an arithmetic number, because the mean of its divisors is an integer number (4157010).

Almost surely, 2^43696138 is an apocalyptic number.

43696138 is a deficient number, since it is larger than the sum of its proper divisors (22816022).

43696138 is a wasteful number, since it uses less digits than its factorization.

43696138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221.

The product of its digits is 93312, while the sum is 40.

The square root of 43696138 is about 6610.3054392365. The cubic root of 43696138 is about 352.2202747051.

It can be divided in two parts, 43696 and 138, that added together give a palindrome (43834).

The spelling of 43696138 in words is "forty-three million, six hundred ninety-six thousand, one hundred thirty-eight".