10509718 has 4 divisors (see below), whose sum is σ = 15764580. Its totient is φ = 5254858.

The previous prime is 10509703. The next prime is 10509773. The reversal of 10509718 is 81790501.

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

It is a super-2 number, since 2×10509718² = 220908344879048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10509718.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2627428 + ... + 2627431.

It is an arithmetic number, because the mean of its divisors is an integer number (3941145).

Almost surely, 2^10509718 is an apocalyptic number.

10509718 is a deficient number, since it is larger than the sum of its proper divisors (5254862).

10509718 is an equidigital number, since it uses as much as digits as its factorization.

10509718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5254861.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 10509718 is about 3241.8695223590. The cubic root of 10509718 is about 219.0434919842.

The spelling of 10509718 in words is "ten million, five hundred nine thousand, seven hundred eighteen".