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17930401 = 61293941
BaseRepresentation
bin100010001100…
…1100010100001
31020201221212221
41010121202201
514042233101
61440151041
7305256136
oct104314241
936657787
1017930401
11a137415
126008481
13393a408
14254a58d
151892aa1
hex11198a1

17930401 has 4 divisors (see below), whose sum is σ = 18224404. Its totient is φ = 17636400.

The previous prime is 17930389. The next prime is 17930413. The reversal of 17930401 is 10403971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10403971 = 54119231.

It is an interprime number because it is at equal distance from previous prime (17930389) and next prime (17930413).

It can be written as a sum of positive squares in 2 ways, for example, as 5645376 + 12285025 = 2376^2 + 3505^2 .

It is a cyclic number.

It is not a de Polignac number, because 17930401 - 213 = 17922209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17930491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146910 + ... + 147031.

It is an arithmetic number, because the mean of its divisors is an integer number (4556101).

Almost surely, 217930401 is an apocalyptic number.

It is an amenable number.

17930401 is a deficient number, since it is larger than the sum of its proper divisors (294003).

17930401 is an equidigital number, since it uses as much as digits as its factorization.

17930401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294002.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 17930401 is about 4234.4304221465. The cubic root of 17930401 is about 261.7359235360.

The spelling of 17930401 in words is "seventeen million, nine hundred thirty thousand, four hundred one".

Divisors: 1 61 293941 17930401