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8212293 = 331032953
BaseRepresentation
bin11111010100111101000101
3120110020011000
4133110331011
54100243133
6452003513
7126542355
oct37247505
916406130
108212293
1146aa021
122900599
131916c5b
14113ab65
15ac3413
hex7d4f45

8212293 has 16 divisors (see below), whose sum is σ = 12288640. Its totient is φ = 5419872.

The previous prime is 8212291. The next prime is 8212333. The reversal of 8212293 is 3922128.

It is a happy number.

It is not a de Polignac number, because 8212293 - 21 = 8212291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8212291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1305 + ... + 4257.

It is an arithmetic number, because the mean of its divisors is an integer number (768040).

Almost surely, 28212293 is an apocalyptic number.

It is an amenable number.

8212293 is a deficient number, since it is larger than the sum of its proper divisors (4076347).

8212293 is a wasteful number, since it uses less digits than its factorization.

8212293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065 (or 3059 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 8212293 is about 2865.7098597032. The cubic root of 8212293 is about 201.7536863107.

It can be divided in two parts, 82122 and 93, that added together give a triangular number (82215 = T405).

The spelling of 8212293 in words is "eight million, two hundred twelve thousand, two hundred ninety-three".

Divisors: 1 3 9 27 103 309 927 2781 2953 8859 26577 79731 304159 912477 2737431 8212293