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1228601 = 11611831
BaseRepresentation
bin100101011111100111001
32022102022202
410223330321
5303303401
642155545
713304633
oct4537471
92272282
101228601
1176a080
124b2bb5
133402aa
1423da53
1519406b
hex12bf39

1228601 has 8 divisors (see below), whose sum is σ = 1363008. Its totient is φ = 1098000.

The previous prime is 1228589. The next prime is 1228603. The reversal of 1228601 is 1068221.

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

It is not a de Polignac number, because 1228601 - 26 = 1228537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245 + ... + 1586.

It is an arithmetic number, because the mean of its divisors is an integer number (170376).

21228601 is an apocalyptic number.

1228601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1228601 is a deficient number, since it is larger than the sum of its proper divisors (134407).

1228601 is a wasteful number, since it uses less digits than its factorization.

1228601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1228601 is about 1108.4227532850. The cubic root of 1228601 is about 107.1034897063.

The spelling of 1228601 in words is "one million, two hundred twenty-eight thousand, six hundred one".

Divisors: 1 11 61 671 1831 20141 111691 1228601