4027638 has 32 divisors (see below), whose sum is σ = 8401536. Its totient is φ = 1286208.

The previous prime is 4027631. The next prime is 4027643. The reversal of 4027638 is 8367204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4027631) 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, 17170 + ... + 17402.

It is an arithmetic number, because the mean of its divisors is an integer number (262548).

Almost surely, 2^4027638 is an apocalyptic number.

4027638 is an abundant number, since it is smaller than the sum of its proper divisors (4373898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4027638 is a wasteful number, since it uses less digits than its factorization.

4027638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 4027638 is about 2006.8976057587. The cubic root of 4027638 is about 159.1048712842.

The spelling of 4027638 in words is "four million, twenty-seven thousand, six hundred thirty-eight".