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1030155 = 3579811
BaseRepresentation
bin11111011100000001011
31221100002220
43323200023
5230431110
634025123
711520240
oct3734013
91840086
101030155
11643a75
124181a3
132a0b79
141cb5c7
15155370
hexfb80b

1030155 has 16 divisors (see below), whose sum is σ = 1883904. Its totient is φ = 470880.

The previous prime is 1030153. The next prime is 1030157. The reversal of 1030155 is 5510301.

It is an interprime number because it is at equal distance from previous prime (1030153) and next prime (1030157).

It is not a de Polignac number, because 1030155 - 21 = 1030153 is a prime.

It is a super-2 number, since 2×10301552 = 2122438648050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1030153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4801 + ... + 5010.

It is an arithmetic number, because the mean of its divisors is an integer number (117744).

21030155 is an apocalyptic number.

1030155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1030155 is a deficient number, since it is larger than the sum of its proper divisors (853749).

1030155 is an equidigital number, since it uses as much as digits as its factorization.

1030155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9826.

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 1030155 is about 1014.9655166556. The cubic root of 1030155 is about 100.9952290005.

Adding to 1030155 its reverse (5510301), we get a palindrome (6540456).

The spelling of 1030155 in words is "one million, thirty thousand, one hundred fifty-five".

Divisors: 1 3 5 7 15 21 35 105 9811 29433 49055 68677 147165 206031 343385 1030155