105628919 has 8 divisors (see below), whose sum is σ = 115728912. Its totient is φ = 95611840.

The previous prime is 105628907. The next prime is 105628927. The reversal of 105628919 is 919826501.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105628919 is a prime.

It is a super-2 number, since 2×105628919² = 22314937058217122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105628979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18044 + ... + 23169.

It is an arithmetic number, because the mean of its divisors is an integer number (14466114).

Almost surely, 2^105628919 is an apocalyptic number.

105628919 is a deficient number, since it is larger than the sum of its proper divisors (10099993).

105628919 is a wasteful number, since it uses less digits than its factorization.

105628919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41457.

The product of its (nonzero) digits is 38880, while the sum is 41.

The square root of 105628919 is about 10277.5930547964. The cubic root of 105628919 is about 472.7094434608.

The spelling of 105628919 in words is "one hundred five million, six hundred twenty-eight thousand, nine hundred nineteen".