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1030220 = 22551511
BaseRepresentation
bin11111011100001001100
31221100012022
43323201030
5230431340
634025312
711520362
oct3734114
91840168
101030220
11644024
12418238
132a0bc9
141cb632
151553b5
hexfb84c

1030220 has 12 divisors (see below), whose sum is σ = 2163504. Its totient is φ = 412080.

The previous prime is 1030219. The next prime is 1030241. The reversal of 1030220 is 220301.

It is a super-2 number, since 2×10302202 = 2122706496800, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1030198 and 1030207.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 25736 + ... + 25775.

It is an arithmetic number, because the mean of its divisors is an integer number (180292).

21030220 is an apocalyptic number.

1030220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1030220 is an abundant number, since it is smaller than the sum of its proper divisors (1133284).

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

1030220 is a wasteful number, since it uses less digits than its factorization.

1030220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51520 (or 51518 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 1030220 is about 1014.9975369428. The cubic root of 1030220 is about 100.9973531313.

Adding to 1030220 its reverse (220301), we get a palindrome (1250521).

The spelling of 1030220 in words is "one million, thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 51511 103022 206044 257555 515110 1030220