105728170 has 8 divisors (see below), whose sum is σ = 190310724. Its totient is φ = 42291264.

The previous prime is 105728167. The next prime is 105728209. The reversal of 105728170 is 71827501.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 86657481 + 19070689 = 9309^2 + 4367^2 .

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

It is a super-2 number, since 2×105728170² = 22356891863097800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5286399 + ... + 5286418.

Almost surely, 2^105728170 is an apocalyptic number.

105728170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105728170 is a deficient number, since it is larger than the sum of its proper divisors (84582554).

105728170 is a wasteful number, since it uses less digits than its factorization.

105728170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10572824.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 105728170 is about 10282.4204348976. The cubic root of 105728170 is about 472.8574527952.

The spelling of 105728170 in words is "one hundred five million, seven hundred twenty-eight thousand, one hundred seventy".