10172809 has 8 divisors (see below), whose sum is σ = 10860480. Its totient is φ = 9500400.

The previous prime is 10172807. The next prime is 10172819. The reversal of 10172809 is 90827101.

10172809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 10172809 - 2¹ = 10172807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10172801) 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, 2422 + ... + 5119.

It is an arithmetic number, because the mean of its divisors is an integer number (1357560).

Almost surely, 2^10172809 is an apocalyptic number.

10172809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

10172809 is a deficient number, since it is larger than the sum of its proper divisors (687671).

10172809 is an equidigital number, since it uses as much as digits as its factorization.

10172809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7631.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 10172809 is about 3189.4841275667. The cubic root of 10172809 is about 216.6774072256.

The spelling of 10172809 in words is "ten million, one hundred seventy-two thousand, eight hundred nine".