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208020832 = 25231092593
BaseRepresentation
bin11000110011000…
…10010101100000
3112111102112221021
430121202111200
5411223131312
632350335224
75104101505
oct1431422540
9474375837
10208020832
11a7471148
12597ba514
1334135066
141d8ad4ac
15133e0c07
hexc662560

208020832 has 48 divisors (see below), whose sum is σ = 431434080. Its totient is φ = 98537472.

The previous prime is 208020829. The next prime is 208020847. The reversal of 208020832 is 238020802.

It is a junction number, because it is equal to n+sod(n) for n = 208020797 and 208020806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78928 + ... + 81520.

It is an arithmetic number, because the mean of its divisors is an integer number (8988210).

Almost surely, 2208020832 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 208020832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215717040).

208020832 is an abundant number, since it is smaller than the sum of its proper divisors (223413248).

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

208020832 is a wasteful number, since it uses less digits than its factorization.

208020832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2735 (or 2727 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 208020832 is about 14422.9273034291. The cubic root of 208020832 is about 592.5189933795.

The spelling of 208020832 in words is "two hundred eight million, twenty thousand, eight hundred thirty-two".

Divisors: 1 2 4 8 16 23 32 46 92 109 184 218 368 436 736 872 1744 2507 2593 3488 5014 5186 10028 10372 20056 20744 40112 41488 59639 80224 82976 119278 238556 282637 477112 565274 954224 1130548 1908448 2261096 4522192 6500651 9044384 13001302 26002604 52005208 104010416 208020832