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19090068 = 2231918329
BaseRepresentation
bin100100011010…
…0101010010100
31022220212122120
41020310222110
514341340233
61521055540
7321156114
oct110645224
938825576
1019090068
11a859718
1264875b0
133c551ca
14276d044
151a214b3
hex1234a94

19090068 has 24 divisors (see below), whose sum is σ = 44782080. Its totient is φ = 6329280.

The previous prime is 19090063. The next prime is 19090073. The reversal of 19090068 is 86009091.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19090063) and next prime (19090073).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19090063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1873 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (1865920).

Almost surely, 219090068 is an apocalyptic number.

It is an amenable number.

19090068 is an abundant number, since it is smaller than the sum of its proper divisors (25692012).

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

19090068 is a wasteful number, since it uses less digits than its factorization.

19090068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8527 (or 8525 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 19090068 is about 4369.2182367101. The cubic root of 19090068 is about 267.2611452749.

The spelling of 19090068 in words is "nineteen million, ninety thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 191 382 573 764 1146 2292 8329 16658 24987 33316 49974 99948 1590839 3181678 4772517 6363356 9545034 19090068