135623044 has 6 divisors (see below), whose sum is σ = 237340334. Its totient is φ = 67811520.

The previous prime is 135623041. The next prime is 135623071. The reversal of 135623044 is 440326531.

It can be written as a sum of positive squares in only one way, i.e., 117983044 + 17640000 = 10862^2 + 4200^2 .

It is a super-2 number, since 2×135623044² = 36787220127651872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135623041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16952877 + ... + 16952884.

Almost surely, 2^135623044 is an apocalyptic number.

It is an amenable number.

135623044 is a deficient number, since it is larger than the sum of its proper divisors (101717290).

135623044 is a wasteful number, since it uses less digits than its factorization.

135623044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33905765 (or 33905763 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 135623044 is about 11645.7307198819. The cubic root of 135623044 is about 513.7807510162.

Adding to 135623044 its reverse (440326531), we get a palindrome (575949575).

The spelling of 135623044 in words is "one hundred thirty-five million, six hundred twenty-three thousand, forty-four".