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8274249 = 328291109
BaseRepresentation
bin11111100100000101001001
3120120101010200
4133210011021
54104233444
6453202413
7130221114
oct37440511
916511120
108274249
114741625
122930409
131939209
14115557b
15ad6969
hex7e4149

8274249 has 12 divisors (see below), whose sum is σ = 11976900. Its totient is φ = 5504544.

The previous prime is 8274247. The next prime is 8274271. The reversal of 8274249 is 9424728.

It can be written as a sum of positive squares in 2 ways, for example, as 1863225 + 6411024 = 1365^2 + 2532^2 .

It is not a de Polignac number, because 8274249 - 21 = 8274247 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (8274247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6907 + ... + 8015.

It is an arithmetic number, because the mean of its divisors is an integer number (998075).

Almost surely, 28274249 is an apocalyptic number.

It is an amenable number.

8274249 is a deficient number, since it is larger than the sum of its proper divisors (3702651).

8274249 is a wasteful number, since it uses less digits than its factorization.

8274249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944 (or 1941 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 8274249 is about 2876.4994350773. The cubic root of 8274249 is about 202.2597791592.

The spelling of 8274249 in words is "eight million, two hundred seventy-four thousand, two hundred forty-nine".

Divisors: 1 3 9 829 1109 2487 3327 7461 9981 919361 2758083 8274249