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8213268 = 223797777
BaseRepresentation
bin11111010101001100010100
3120110021111010
4133111030110
54100311033
6452012220
7126545250
oct37251424
916407433
108213268
1146aa828
122901070
13191752b
14113b260
15ac3863
hex7d5314

8213268 has 24 divisors (see below), whose sum is σ = 21902272. Its totient is φ = 2346624.

The previous prime is 8213267. The next prime is 8213273. The reversal of 8213268 is 8623128.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8213267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48805 + ... + 48972.

Almost surely, 28213268 is an apocalyptic number.

It is an amenable number.

8213268 is an abundant number, since it is smaller than the sum of its proper divisors (13689004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8213268 is a wasteful number, since it uses less digits than its factorization.

8213268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97791 (or 97789 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 8213268 is about 2865.8799695730. The cubic root of 8213268 is about 201.7616703601.

The spelling of 8213268 in words is "eight million, two hundred thirteen thousand, two hundred sixty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 97777 195554 293331 391108 586662 684439 1173324 1368878 2053317 2737756 4106634 8213268