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12422030240 = 255611272749
BaseRepresentation
bin10111001000110100…
…10010001110100000
31012001201020112000002
423210122102032200
5200420014431430
65412343115132
7616554341414
oct134432221640
935051215002
1012422030240
1152a4a041a4
1224a8142aa8
13122c71a669
1485bab8d44
154ca836845
hex2e46923a0

12422030240 has 48 divisors (see below), whose sum is σ = 29828169000. Its totient is φ = 4887352320.

The previous prime is 12422030221. The next prime is 12422030267. The reversal of 12422030240 is 4203022421.

It can be written as a sum of positive squares in 4 ways, for example, as 6476386576 + 5945643664 = 80476^2 + 77108^2 .

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

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, 626615 + ... + 646134.

Almost surely, 212422030240 is an apocalyptic number.

12422030240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12422030240 is an abundant number, since it is smaller than the sum of its proper divisors (17406138760).

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

12422030240 is a wasteful number, since it uses less digits than its factorization.

12422030240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272825 (or 1272817 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 12422030240 its reverse (4203022421), we get a palindrome (16625052661).

The spelling of 12422030240 in words is "twelve billion, four hundred twenty-two million, thirty thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 61 80 122 160 244 305 488 610 976 1220 1952 2440 4880 9760 1272749 2545498 5090996 6363745 10181992 12727490 20363984 25454980 40727968 50909960 77637689 101819920 155275378 203639840 310550756 388188445 621101512 776376890 1242203024 1552753780 2484406048 3105507560 6211015120 12422030240