17420146 has 8 divisors (see below), whose sum is σ = 26623404. Its totient is φ = 8545680.

The previous prime is 17420141. The next prime is 17420147. The reversal of 17420146 is 64102471.

It can be written as a sum of positive squares in 2 ways, for example, as 17181025 + 239121 = 4145^2 + 489^2 .

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

It is a super-2 number, since 2×17420146² = 606922973322632, 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 17420146.

It is not an unprimeable number, because it can be changed into a prime (17420141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82065 + ... + 82276.

Almost surely, 2^17420146 is an apocalyptic number.

17420146 is a deficient number, since it is larger than the sum of its proper divisors (9203258).

17420146 is a wasteful number, since it uses less digits than its factorization.

17420146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164396.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 17420146 is about 4173.7448412667. The cubic root of 17420146 is about 259.2292063219.

The spelling of 17420146 in words is "seventeen million, four hundred twenty thousand, one hundred forty-six".