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11230261 = 72229189
BaseRepresentation
bin101010110101…
…110000110101
3210010120000121
4222311300311
510333332021
61040411541
7164312200
oct52656065
923116017
1011230261
116380509
123916bb1
132432833
1416c4937
15ebc741
hexab5c35

11230261 has 6 divisors (see below), whose sum is σ = 13063830. Its totient is φ = 9625896.

The previous prime is 11230243. The next prime is 11230309. The reversal of 11230261 is 16203211.

It can be written as a sum of positive squares in only one way, i.e., 5731236 + 5499025 = 2394^2 + 2345^2 .

It is not a de Polignac number, because 11230261 - 29 = 11229749 is a prime.

It is a super-2 number, since 2×112302612 = 252237524256242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11230201) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 114546 + ... + 114643.

It is an arithmetic number, because the mean of its divisors is an integer number (2177305).

Almost surely, 211230261 is an apocalyptic number.

It is an amenable number.

11230261 is a deficient number, since it is larger than the sum of its proper divisors (1833569).

11230261 is an equidigital number, since it uses as much as digits as its factorization.

11230261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229203 (or 229196 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 11230261 is about 3351.1581580105. The cubic root of 11230261 is about 223.9391110545.

Adding to 11230261 its reverse (16203211), we get a palindrome (27433472).

The spelling of 11230261 in words is "eleven million, two hundred thirty thousand, two hundred sixty-one".

Divisors: 1 7 49 229189 1604323 11230261