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19010214 = 234432729
BaseRepresentation
bin100100010000…
…1001010100110
31022202211010000
41020201022212
514331311324
61515242130
7320404236
oct110411246
938684100
1019010214
11a804723
126449346
133c27a62
14274bcc6
151a079c9
hex12212a6

19010214 has 40 divisors (see below), whose sum is σ = 43603560. Its totient is φ = 6187104.

The previous prime is 19010209. The next prime is 19010219. The reversal of 19010214 is 41201091.

It is an interprime number because it is at equal distance from previous prime (19010209) and next prime (19010219).

It is a super-2 number, since 2×190102142 = 722776472651592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19010219) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5602 + ... + 8330.

It is an arithmetic number, because the mean of its divisors is an integer number (1090089).

Almost surely, 219010214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19010214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21801780).

19010214 is an abundant number, since it is smaller than the sum of its proper divisors (24593346).

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

19010214 is a wasteful number, since it uses less digits than its factorization.

19010214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786 (or 2777 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 19010214 is about 4360.0704122755. The cubic root of 19010214 is about 266.8879721915.

It can be divided in two parts, 190 and 10214, that added together give a square (10404 = 1022).

The spelling of 19010214 in words is "nineteen million, ten thousand, two hundred fourteen".

Divisors: 1 2 3 6 9 18 27 43 54 81 86 129 162 258 387 774 1161 2322 2729 3483 5458 6966 8187 16374 24561 49122 73683 117347 147366 221049 234694 352041 442098 704082 1056123 2112246 3168369 6336738 9505107 19010214