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219080052 = 2235263857
BaseRepresentation
bin11010000111011…
…10010101110100
3120021020102100000
431003232111310
5422041030202
633423351300
75300102232
oct1503562564
9507212300
10219080052
111027350a4
1261452530
1336507a89
142114b952
151437791c
hexd0ee574

219080052 has 72 divisors (see below), whose sum is σ = 577152576. Its totient is φ = 72664128.

The previous prime is 219080033. The next prime is 219080053. The reversal of 219080052 is 250080912.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 219079998 and 219080025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219080053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255208 + ... + 256064.

It is an arithmetic number, because the mean of its divisors is an integer number (8016008).

Almost surely, 2219080052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219080052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288576288).

219080052 is an abundant number, since it is smaller than the sum of its proper divisors (358072524).

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

219080052 is a wasteful number, since it uses less digits than its factorization.

219080052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 219080052 is about 14801.3530462590. The cubic root of 219080052 is about 602.8384508201.

The spelling of 219080052 in words is "two hundred nineteen million, eighty thousand, fifty-two".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 243 263 324 486 526 789 857 972 1052 1578 1714 2367 2571 3156 3428 4734 5142 7101 7713 9468 10284 14202 15426 21303 23139 28404 30852 42606 46278 63909 69417 85212 92556 127818 138834 208251 225391 255636 277668 416502 450782 676173 833004 901564 1352346 2028519 2704692 4057038 6085557 8114076 12171114 18256671 24342228 36513342 54770013 73026684 109540026 219080052