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20173401 = 331574759
BaseRepresentation
bin100110011110…
…1001001011001
31101221220201000
41030331021121
520131022101
62000215213
7333320403
oct114751131
941856630
1020173401
1110429636
12690a509
134244331
142971b73
151b87486
hex133d259

20173401 has 16 divisors (see below), whose sum is σ = 30083200. Its totient is φ = 13360464.

The previous prime is 20173397. The next prime is 20173409. The reversal of 20173401 is 10437102.

It is not a de Polignac number, because 20173401 - 22 = 20173397 is a prime.

It is a super-2 number, since 2×201734012 = 813932215813602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20173409) 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 15 ways as a sum of consecutive naturals, for example, 1860 + ... + 6618.

It is an arithmetic number, because the mean of its divisors is an integer number (1880200).

Almost surely, 220173401 is an apocalyptic number.

It is an amenable number.

20173401 is a deficient number, since it is larger than the sum of its proper divisors (9909799).

20173401 is a wasteful number, since it uses less digits than its factorization.

20173401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4925 (or 4919 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20173401 is about 4491.4809361724. The cubic root of 20173401 is about 272.2239765972.

The spelling of 20173401 in words is "twenty million, one hundred seventy-three thousand, four hundred one".

Divisors: 1 3 9 27 157 471 1413 4239 4759 14277 42831 128493 747163 2241489 6724467 20173401