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1228017 = 3758477
BaseRepresentation
bin100101011110011110001
32022101112010
410223303301
5303244032
642153133
713303140
oct4536361
92271463
101228017
1176969a
124b27a9
1333cc4b
1423d757
15193ccc
hex12bcf1

1228017 has 8 divisors (see below), whose sum is σ = 1871296. Its totient is φ = 701712.

The previous prime is 1228013. The next prime is 1228021. The reversal of 1228017 is 7108221.

It is an interprime number because it is at equal distance from previous prime (1228013) and next prime (1228021).

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

It is not a de Polignac number, because 1228017 - 22 = 1228013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 58477 = 1228017 / (1 + 2 + 2 + 8 + 0 + 1 + 7).

1228017 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1227984 and 1228002.

It is not an unprimeable number, because it can be changed into a prime (1228013) 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, 29218 + ... + 29259.

It is an arithmetic number, because the mean of its divisors is an integer number (233912).

21228017 is an apocalyptic number.

It is an amenable number.

1228017 is a deficient number, since it is larger than the sum of its proper divisors (643279).

1228017 is an equidigital number, since it uses as much as digits as its factorization.

1228017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58487.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1228017 is about 1108.1592845796. The cubic root of 1228017 is about 107.0865169188.

The spelling of 1228017 in words is "one million, two hundred twenty-eight thousand, seventeen".

Divisors: 1 3 7 21 58477 175431 409339 1228017