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17980204 = 221123109163
BaseRepresentation
bin100010010010…
…1101100101100
31020211111012111
41010211230230
514100331304
61441213404
7305554264
oct104455454
936744174
1017980204
11a170880
126031264
133956c98
1425607a4
1518a2704
hex1125b2c

17980204 has 48 divisors (see below), whose sum is σ = 36368640. Its totient is φ = 7698240.

The previous prime is 17980189. The next prime is 17980241. The reversal of 17980204 is 40208971.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

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 in 15 ways as a sum of consecutive naturals, for example, 110227 + ... + 110389.

It is an arithmetic number, because the mean of its divisors is an integer number (757680).

Almost surely, 217980204 is an apocalyptic number.

It is an amenable number.

17980204 is an abundant number, since it is smaller than the sum of its proper divisors (18388436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17980204 is a wasteful number, since it uses less digits than its factorization.

17980204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 17980204 is about 4240.3070643528. The cubic root of 17980204 is about 261.9780297410.

The spelling of 17980204 in words is "seventeen million, nine hundred eighty thousand, two hundred four".

Divisors: 1 2 4 11 22 23 44 46 92 109 163 218 253 326 436 506 652 1012 1199 1793 2398 2507 3586 3749 4796 5014 7172 7498 10028 14996 17767 27577 35534 41239 55154 71068 82478 110308 164956 195437 390874 408641 781748 817282 1634564 4495051 8990102 17980204