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1214290 = 257111983
BaseRepresentation
bin100101000011101010010
32021200200201
410220131102
5302324130
642005414
713215130
oct4503522
92250621
101214290
1175a350
124a686a
1333691c
14238750
1518ebca
hex128752

1214290 has 64 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 354240.

The previous prime is 1214281. The next prime is 1214299. The reversal of 1214290 is 924121.

It is an interprime number because it is at equal distance from previous prime (1214281) and next prime (1214299).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (1214299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14589 + ... + 14671.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

21214290 is an apocalyptic number.

1214290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1214290 is an abundant number, since it is smaller than the sum of its proper divisors (1688750).

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

1214290 is a wasteful number, since it uses less digits than its factorization.

1214290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1214290 is about 1101.9482746481. The cubic root of 1214290 is about 106.6860099469.

The spelling of 1214290 in words is "one million, two hundred fourteen thousand, two hundred ninety".

Divisors: 1 2 5 7 10 11 14 19 22 35 38 55 70 77 83 95 110 133 154 166 190 209 266 385 415 418 581 665 770 830 913 1045 1162 1330 1463 1577 1826 2090 2905 2926 3154 4565 5810 6391 7315 7885 9130 11039 12782 14630 15770 17347 22078 31955 34694 55195 63910 86735 110390 121429 173470 242858 607145 1214290