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19892201 = 727710259
BaseRepresentation
bin100101111100…
…0011111101001
31101102121222012
41023320133221
520043022301
61550205305
7331036520
oct113703751
941377865
1019892201
111025733a
1267b3835
134176344
1428db4b7
151b2debb
hex12f87e9

19892201 has 8 divisors (see below), whose sum is σ = 22818240. Its totient is φ = 16987248.

The previous prime is 19892189. The next prime is 19892207. The reversal of 19892201 is 10229891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19892201 - 210 = 19891177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19892207) 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, 3191 + ... + 7068.

It is an arithmetic number, because the mean of its divisors is an integer number (2852280).

Almost surely, 219892201 is an apocalyptic number.

It is an amenable number.

19892201 is a deficient number, since it is larger than the sum of its proper divisors (2926039).

19892201 is a wasteful number, since it uses less digits than its factorization.

19892201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10543.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 19892201 is about 4460.0673761727. The cubic root of 19892201 is about 270.9531969845.

The spelling of 19892201 in words is "nineteen million, eight hundred ninety-two thousand, two hundred one".

Divisors: 1 7 277 1939 10259 71813 2841743 19892201