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1222293 = 31812251
BaseRepresentation
bin100101010011010010101
32022002200010
410222122111
5303103133
642110433
713250352
oct4523225
92262603
101222293
11765366
124ab419
1333a467
1423b629
15192263
hex12a695

1222293 has 8 divisors (see below), whose sum is σ = 1639456. Its totient is φ = 810000.

The previous prime is 1222279. The next prime is 1222307. The reversal of 1222293 is 3922221.

It is an interprime number because it is at equal distance from previous prime (1222279) and next prime (1222307).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222293 - 26 = 1222229 is a prime.

It is a d-powerful number, because it can be written as 1 + 24 + 214 + 217 + 220 + 94 + 39 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222253) 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, 583 + ... + 1668.

It is an arithmetic number, because the mean of its divisors is an integer number (204932).

21222293 is an apocalyptic number.

It is an amenable number.

1222293 is a deficient number, since it is larger than the sum of its proper divisors (417163).

1222293 is a wasteful number, since it uses less digits than its factorization.

1222293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435.

The product of its digits is 432, while the sum is 21.

The square root of 1222293 is about 1105.5736067761. The cubic root of 1222293 is about 106.9198747978.

It can be divided in two parts, 122 and 2293, that added together give a triangular number (2415 = T69).

The spelling of 1222293 in words is "one million, two hundred twenty-two thousand, two hundred ninety-three".

Divisors: 1 3 181 543 2251 6753 407431 1222293