4261638 has 8 divisors (see below), whose sum is σ = 8523288. Its totient is φ = 1420544.

The previous prime is 4261627. The next prime is 4261651. The reversal of 4261638 is 8361624.

It is a sphenic number, since it is the product of 3 distinct primes.

4261638 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355131 + ... + 355142.

It is an arithmetic number, because the mean of its divisors is an integer number (1065411).

Almost surely, 2^4261638 is an apocalyptic number.

4261638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4261638 is a wasteful number, since it uses less digits than its factorization.

4261638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710278.

The product of its digits is 6912, while the sum is 30.

The square root of 4261638 is about 2064.3735127152. The cubic root of 4261638 is about 162.1283086523.

The spelling of 4261638 in words is "four million, two hundred sixty-one thousand, six hundred thirty-eight".