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19008212 = 2223307673
BaseRepresentation
bin100100010000…
…0101011010100
31022202201100212
41020200223110
514331230322
61515224552
7320365346
oct110405324
938681325
1019008212
11a803173
126448158
133c26b82
14274b296
151a070e2
hex1220ad4

19008212 has 24 divisors (see below), whose sum is σ = 34875456. Its totient is φ = 9047808.

The previous prime is 19008181. The next prime is 19008221. The reversal of 19008212 is 21280091.

It is a super-2 number, since 2×190082122 = 722624246873888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27908 + ... + 28580.

It is an arithmetic number, because the mean of its divisors is an integer number (1453144).

Almost surely, 219008212 is an apocalyptic number.

It is an amenable number.

19008212 is a deficient number, since it is larger than the sum of its proper divisors (15867244).

19008212 is a wasteful number, since it uses less digits than its factorization.

19008212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 19008212 is about 4359.8408227824. The cubic root of 19008212 is about 266.8786030443.

The spelling of 19008212 in words is "nineteen million, eight thousand, two hundred twelve".

Divisors: 1 2 4 23 46 92 307 614 673 1228 1346 2692 7061 14122 15479 28244 30958 61916 206611 413222 826444 4752053 9504106 19008212