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11390197 = 721317881
BaseRepresentation
bin101011011100…
…110011110101
3210102200102011
4223130303311
510403441242
61044044221
7165546400
oct53346365
923380364
1011390197
11647a695
123993671
13248a580
141726d37
15eeed17
hexadccf5

11390197 has 12 divisors (see below), whose sum is σ = 14269836. Its totient is φ = 9011520.

The previous prime is 11390189. The next prime is 11390213. The reversal of 11390197 is 79109311.

It can be written as a sum of positive squares in 2 ways, for example, as 2869636 + 8520561 = 1694^2 + 2919^2 .

It is not a de Polignac number, because 11390197 - 23 = 11390189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11390107) 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, 8304 + ... + 9577.

It is an arithmetic number, because the mean of its divisors is an integer number (1189153).

Almost surely, 211390197 is an apocalyptic number.

It is an amenable number.

11390197 is a deficient number, since it is larger than the sum of its proper divisors (2879639).

11390197 is a wasteful number, since it uses less digits than its factorization.

11390197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17908 (or 17901 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 31.

The square root of 11390197 is about 3374.9365919970. The cubic root of 11390197 is about 224.9971818577.

The spelling of 11390197 in words is "eleven million, three hundred ninety thousand, one hundred ninety-seven".

Divisors: 1 7 13 49 91 637 17881 125167 232453 876169 1627171 11390197