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19807002 = 2322347843
BaseRepresentation
bin100101110001…
…1101100011010
31101021022002200
41023203230122
520032311002
61544311030
7330233235
oct113435432
941238080
1019807002
11101a9326
126772476
134146627
1428b841c
151b13b1c
hex12e3b1a

19807002 has 24 divisors (see below), whose sum is σ = 44781984. Its totient is φ = 6315144.

The previous prime is 19806967. The next prime is 19807013. The reversal of 19807002 is 20070891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23508 + ... + 24335.

It is an arithmetic number, because the mean of its divisors is an integer number (1865916).

Almost surely, 219807002 is an apocalyptic number.

19807002 is an abundant number, since it is smaller than the sum of its proper divisors (24974982).

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

19807002 is a wasteful number, since it uses less digits than its factorization.

19807002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47874 (or 47871 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 19807002 is about 4450.5058139497. The cubic root of 19807002 is about 270.5658093520.

Adding to 19807002 its reverse (20070891), we get a palindrome (39877893).

The spelling of 19807002 in words is "nineteen million, eight hundred seven thousand, two".

Divisors: 1 2 3 6 9 18 23 46 69 138 207 414 47843 95686 143529 287058 430587 861174 1100389 2200778 3301167 6602334 9903501 19807002