Search a number
-
+
53012230400 = 28528283161
BaseRepresentation
bin110001010111110001…
…100111000100000000
312001211111212022220202
4301113301213010000
51332032112333100
640204204024332
73554456344403
oct612761470400
9161744768822
1053012230400
1120534027368
12a3358320a8
134ccab4708c
1427cc7dbd3a
1515a40527d5
hexc57c67100

53012230400 has 54 divisors (see below), whose sum is σ = 131213569242. Its totient is φ = 21204889600.

The previous prime is 53012230387. The next prime is 53012230421. The reversal of 53012230400 is 403221035.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9641668864 + 43370561536 = 98192^2 + 208256^2 .

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 5 ways as a sum of consecutive naturals, for example, 4135181 + ... + 4147980.

Almost surely, 253012230400 is an apocalyptic number.

53012230400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53012230400 is an abundant number, since it is smaller than the sum of its proper divisors (78201338842).

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

53012230400 is an equidigital number, since it uses as much as digits as its factorization.

53012230400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8283187 (or 8283168 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 53012230400 its reverse (403221035), we get a palindrome (53415451435).

The spelling of 53012230400 in words is "fifty-three billion, twelve million, two hundred thirty thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 256 320 400 640 800 1280 1600 3200 6400 8283161 16566322 33132644 41415805 66265288 82831610 132530576 165663220 207079025 265061152 331326440 414158050 530122304 662652880 828316100 1060244608 1325305760 1656632200 2120489216 2650611520 3313264400 5301223040 6626528800 10602446080 13253057600 26506115200 53012230400