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1090201 = 72191171
BaseRepresentation
bin100001010001010011001
32001101110211
410022022121
5234341301
635211121
712160300
oct4121231
92041424
101090201
116850a2
12446aa1
132c22b8
14205437
15168051
hex10a299

1090201 has 12 divisors (see below), whose sum is σ = 1336080. Its totient is φ = 884520.

The previous prime is 1090189. The next prime is 1090211. The reversal of 1090201 is 1020901.

It is not a de Polignac number, because 1090201 - 25 = 1090169 is a prime.

1090201 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1090211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 346 + ... + 1516.

It is an arithmetic number, because the mean of its divisors is an integer number (111340).

21090201 is an apocalyptic number.

It is an amenable number.

1090201 is a deficient number, since it is larger than the sum of its proper divisors (245879).

1090201 is a wasteful number, since it uses less digits than its factorization.

1090201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1090201 is about 1044.1269079954. The cubic root of 1090201 is about 102.9205721899.

The spelling of 1090201 in words is "one million, ninety thousand, two hundred one".

Divisors: 1 7 19 49 133 931 1171 8197 22249 57379 155743 1090201