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2081728 = 26112957
BaseRepresentation
bin111111100001111000000
310220202121001
413330033000
51013103403
6112341344
723460115
oct7741700
93822531
102081728
1111a2040
12844854
1357b6bc
143c290c
152b1c1d
hex1fc3c0

2081728 has 28 divisors (see below), whose sum is σ = 4507992. Its totient is φ = 945920.

The previous prime is 2081719. The next prime is 2081749. The reversal of 2081728 is 8271802.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 2081696 and 2081705.

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 3 ways as a sum of consecutive naturals, for example, 775 + ... + 2182.

22081728 is an apocalyptic number.

It is an amenable number.

2081728 is an abundant number, since it is smaller than the sum of its proper divisors (2426264).

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

2081728 is a wasteful number, since it uses less digits than its factorization.

2081728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980 (or 2970 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 2081728 is about 1442.8194620257. The cubic root of 2081728 is about 127.6854254473.

It can be divided in two parts, 2081 and 728, that added together give a square (2809 = 532).

The spelling of 2081728 in words is "two million, eighty-one thousand, seven hundred twenty-eight".

Divisors: 1 2 4 8 11 16 22 32 44 64 88 176 352 704 2957 5914 11828 23656 32527 47312 65054 94624 130108 189248 260216 520432 1040864 2081728