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219000680 = 2354123257
BaseRepresentation
bin11010000110110…
…10111101101000
3120021002101110022
431003122331220
5422031010210
633421540012
75266321643
oct1503327550
9507071408
10219000680
111026904a8
1261414608
13364aa902
142112aa5a
151435e155
hexd0daf68

219000680 has 48 divisors (see below), whose sum is σ = 505218060. Its totient is φ = 85437440.

The previous prime is 219000679. The next prime is 219000697. The reversal of 219000680 is 86000912.

It can be written as a sum of positive squares in 6 ways, for example, as 25623844 + 193376836 = 5062^2 + 13906^2 .

It is a super-2 number, since 2×2190006802 = 95922595680924800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65612 + ... + 68868.

Almost surely, 2219000680 is an apocalyptic number.

219000680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219000680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252609030).

219000680 is an abundant number, since it is smaller than the sum of its proper divisors (286217380).

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

219000680 is a wasteful number, since it uses less digits than its factorization.

219000680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350 (or 3305 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 219000680 is about 14798.6715620018. The cubic root of 219000680 is about 602.7656398807.

The spelling of 219000680 in words is "two hundred nineteen million, six hundred eighty", and thus it is an aban number.

Divisors: 1 2 4 5 8 10 20 40 41 82 164 205 328 410 820 1640 1681 3257 3362 6514 6724 8405 13028 13448 16285 16810 26056 32570 33620 65140 67240 130280 133537 267074 534148 667685 1068296 1335370 2670740 5341480 5475017 10950034 21900068 27375085 43800136 54750170 109500340 219000680