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12322130420 = 2251932426659
BaseRepresentation
bin10110111100111010…
…01100100111110100
31011210202021002012202
423132131030213310
5200213431133140
65354414004032
7614232244325
oct133635144764
934722232182
1012322130420
115253580a66
12247a7a6618
131214b10642
1484c71244c
154c1ba1915
hex2de74c9f4

12322130420 has 24 divisors (see below), whose sum is σ = 27238394400. Its totient is φ = 4669438752.

The previous prime is 12322130407. The next prime is 12322130467. The reversal of 12322130420 is 2403122321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12322130392 and 12322130401.

It is a congruent number.

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, 16212950 + ... + 16213709.

It is an arithmetic number, because the mean of its divisors is an integer number (1134933100).

Almost surely, 212322130420 is an apocalyptic number.

12322130420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12322130420 is an abundant number, since it is smaller than the sum of its proper divisors (14916263980).

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

12322130420 is a wasteful number, since it uses less digits than its factorization.

12322130420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32426687 (or 32426685 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12322130420 its reverse (2403122321), we get a palindrome (14725252741).

The spelling of 12322130420 in words is "twelve billion, three hundred twenty-two million, one hundred thirty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 32426659 64853318 129706636 162133295 324266590 616106521 648533180 1232213042 2464426084 3080532605 6161065210 12322130420