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19936801 = 178913177
BaseRepresentation
bin100110000001…
…1011000100001
31101111220011001
41030003120201
520100434201
61551152001
7331313533
oct114033041
941456131
1019936801
11102878a5
126815601
134190731
14290d853
151b3c301
hex1303621

19936801 has 8 divisors (see below), whose sum is σ = 21348360. Its totient is φ = 18551808.

The previous prime is 19936799. The next prime is 19936817. The reversal of 19936801 is 10863991.

It can be written as a sum of positive squares in 4 ways, for example, as 3744225 + 16192576 = 1935^2 + 4024^2 .

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 19936801 - 21 = 19936799 is a prime.

It is a super-2 number, since 2×199368012 = 794952068227202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19936201) 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, 5076 + ... + 8101.

It is an arithmetic number, because the mean of its divisors is an integer number (2668545).

Almost surely, 219936801 is an apocalyptic number.

It is an amenable number.

19936801 is a deficient number, since it is larger than the sum of its proper divisors (1411559).

19936801 is a wasteful number, since it uses less digits than its factorization.

19936801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13283.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 19936801 is about 4465.0645012138. The cubic root of 19936801 is about 271.1555458400.

The spelling of 19936801 in words is "nineteen million, nine hundred thirty-six thousand, eight hundred one".

Divisors: 1 17 89 1513 13177 224009 1172753 19936801