10155638 has 4 divisors (see below), whose sum is σ = 15233460. Its totient is φ = 5077818.

The previous prime is 10155637. The next prime is 10155667. The reversal of 10155638 is 83655101.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 10155638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10155637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2538908 + ... + 2538911.

It is an arithmetic number, because the mean of its divisors is an integer number (3808365).

Almost surely, 2^10155638 is an apocalyptic number.

10155638 is a deficient number, since it is larger than the sum of its proper divisors (5077822).

10155638 is an equidigital number, since it uses as much as digits as its factorization.

10155638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5077821.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 10155638 is about 3186.7911760892. The cubic root of 10155638 is about 216.5554263949. Note that the first 3 decimals are identical.

The spelling of 10155638 in words is "ten million, one hundred fifty-five thousand, six hundred thirty-eight".