109628638 has 8 divisors (see below), whose sum is σ = 187934832. Its totient is φ = 46983696.

The previous prime is 109628627. The next prime is 109628639. The reversal of 109628638 is 836826901.

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

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 109628594 and 109628603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109628639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3915295 + ... + 3915322.

It is an arithmetic number, because the mean of its divisors is an integer number (23491854).

Almost surely, 2^109628638 is an apocalyptic number.

109628638 is a deficient number, since it is larger than the sum of its proper divisors (78306194).

109628638 is an equidigital number, since it uses as much as digits as its factorization.

109628638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7830626.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 109628638 is about 10470.3695254752. The cubic root of 109628638 is about 478.6021804338.

It can be divided in two parts, 10962 and 8638, that added together give a square (19600 = 140²).

The spelling of 109628638 in words is "one hundred nine million, six hundred twenty-eight thousand, six hundred thirty-eight".