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1022130 = 232541277
BaseRepresentation
bin11111001100010110010
31220221002200
43321202302
5230202010
633524030
711454654
oct3714262
91827080
101022130
11638a3a
12413616
1329a315
141c86d4
15152cc0
hexf98b2

1022130 has 48 divisors (see below), whose sum is σ = 2732184. Its totient is φ = 264960.

The previous prime is 1022129. The next prime is 1022137. The reversal of 1022130 is 312201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 370881 + 651249 = 609^2 + 807^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022137) 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 23 ways as a sum of consecutive naturals, for example, 3552 + ... + 3828.

21022130 is an apocalyptic number.

1022130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1366092).

1022130 is an abundant number, since it is smaller than the sum of its proper divisors (1710054).

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

1022130 is a wasteful number, since it uses less digits than its factorization.

1022130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1022130 is about 1011.0044510288. The cubic root of 1022130 is about 100.7322910748.

Adding to 1022130 its reverse (312201), we get a palindrome (1334331).

The spelling of 1022130 in words is "one million, twenty-two thousand, one hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 41 45 82 90 123 205 246 277 369 410 554 615 738 831 1230 1385 1662 1845 2493 2770 3690 4155 4986 8310 11357 12465 22714 24930 34071 56785 68142 102213 113570 170355 204426 340710 511065 1022130