2135638 has 16 divisors (see below), whose sum is σ = 3453120. Its totient is φ = 987336.

The previous prime is 2135611. The next prime is 2135641. The reversal of 2135638 is 8365312.

It is a d-powerful number, because it can be written as 2¹² + 1 + 3⁷ + 5⁸ + 6⁸ + 3¹⁰ + 8² .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981 + ... + 2287.

It is an arithmetic number, because the mean of its divisors is an integer number (215820).

2^2135638 is an apocalyptic number.

2135638 is a deficient number, since it is larger than the sum of its proper divisors (1317482).

2135638 is a wasteful number, since it uses less digits than its factorization.

2135638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

The product of its digits is 4320, while the sum is 28.

The square root of 2135638 is about 1461.3822224182. The cubic root of 2135638 is about 128.7782581642.

The spelling of 2135638 in words is "two million, one hundred thirty-five thousand, six hundred thirty-eight".