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1020321320 = 235163156491
BaseRepresentation
bin111100110100001…
…101111000101000
32122002220200201112
4330310031320220
54042200240240
6245125005452
734166405504
oct7464157050
92562820645
101020321320
11483a43567
12245853888
13133503935
149971b304
155e897665
hex3cd0de28

1020321320 has 32 divisors (see below), whose sum is σ = 2309821920. Its totient is φ = 405622080.

The previous prime is 1020321311. The next prime is 1020321349. The reversal of 1020321320 is 231230201.

It is a happy number.

1020321320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1020321295 and 1020321304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71726 + ... + 84765.

It is an arithmetic number, because the mean of its divisors is an integer number (72181935).

Almost surely, 21020321320 is an apocalyptic number.

1020321320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020321320 is an abundant number, since it is smaller than the sum of its proper divisors (1289500600).

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

1020321320 is a wasteful number, since it uses less digits than its factorization.

1020321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156665 (or 156661 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1020321320 is about 31942.4689089619. The cubic root of 1020321320 is about 1006.7284004264.

Adding to 1020321320 its reverse (231230201), we get a palindrome (1251551521).

The spelling of 1020321320 in words is "one billion, twenty million, three hundred twenty-one thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 163 326 652 815 1304 1630 3260 6520 156491 312982 625964 782455 1251928 1564910 3129820 6259640 25508033 51016066 102032132 127540165 204064264 255080330 510160660 1020321320