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16241261 = 37438953
BaseRepresentation
bin111101111101…
…001001101101
31010120010211012
4331331021231
513124210021
61340035005
7255022421
oct75751155
933503735
1016241261
119193333
125532a65
13349861a
14222ab81
15165c35b
hexf7d26d

16241261 has 4 divisors (see below), whose sum is σ = 16680252. Its totient is φ = 15802272.

The previous prime is 16241233. The next prime is 16241263. The reversal of 16241261 is 16214261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16214261 = 72316323.

It can be written as a sum of positive squares in 2 ways, for example, as 14485636 + 1755625 = 3806^2 + 1325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-16241261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16241263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219440 + ... + 219513.

It is an arithmetic number, because the mean of its divisors is an integer number (4170063).

Almost surely, 216241261 is an apocalyptic number.

It is an amenable number.

16241261 is a deficient number, since it is larger than the sum of its proper divisors (438991).

16241261 is an equidigital number, since it uses as much as digits as its factorization.

16241261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438990.

The product of its digits is 576, while the sum is 23.

The square root of 16241261 is about 4030.0447888330. The cubic root of 16241261 is about 253.2444376849.

Subtracting from 16241261 its reverse (16214261), we obtain a cube (27000 = 303).

The spelling of 16241261 in words is "sixteen million, two hundred forty-one thousand, two hundred sixty-one".

Divisors: 1 37 438953 16241261