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19213068 = 22371271801
BaseRepresentation
bin100100101001…
…0101100001100
31100011010101010
41021102230030
514404304233
61523445220
7322210530
oct111225414
940133333
1019213068
11a933076
126526810
133c991a4
1427a1bc0
151a47b63
hex1252b0c

19213068 has 48 divisors (see below), whose sum is σ = 51666944. Its totient is φ = 5443200.

The previous prime is 19213067. The next prime is 19213079. The reversal of 19213068 is 86031291.

It is not an unprimeable number, because it can be changed into a prime (19213067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9768 + ... + 11568.

Almost surely, 219213068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19213068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25833472).

19213068 is an abundant number, since it is smaller than the sum of its proper divisors (32453876).

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

19213068 is a wasteful number, since it uses less digits than its factorization.

19213068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 19213068 is about 4383.2713810578. The cubic root of 19213068 is about 267.8339172954.

It can be divided in two parts, 192 and 13068, that multiplied together give a square (2509056 = 15842).

The spelling of 19213068 in words is "nineteen million, two hundred thirteen thousand, sixty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 127 254 381 508 762 889 1524 1778 1801 2667 3556 3602 5334 5403 7204 10668 10806 12607 21612 25214 37821 50428 75642 151284 228727 457454 686181 914908 1372362 1601089 2744724 3202178 4803267 6404356 9606534 19213068