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2068820890 = 251919515581
BaseRepresentation
bin111101101001111…
…1011001110011010
312100011211222201221
41323103323032122
513214104232030
6541142002254
7102160454533
oct17323731632
95304758657
102068820890
11971882834
12498a1638a
1326c7c2296
14158a9168a
15c1958e7a
hex7b4fb39a

2068820890 has 32 divisors (see below), whose sum is σ = 3922583040. Its totient is φ = 783432000.

The previous prime is 2068820881. The next prime is 2068820911. The reversal of 2068820890 is 980288602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367900 + ... + 373480.

It is an arithmetic number, because the mean of its divisors is an integer number (122580720).

Almost surely, 22068820890 is an apocalyptic number.

2068820890 is a deficient number, since it is larger than the sum of its proper divisors (1853762150).

2068820890 is a wasteful number, since it uses less digits than its factorization.

2068820890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7558.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 2068820890 is about 45484.2927833335. The cubic root of 2068820890 is about 1274.2098685154.

The spelling of 2068820890 in words is "two billion, sixty-eight million, eight hundred twenty thousand, eight hundred ninety".

Divisors: 1 2 5 10 19 38 95 190 1951 3902 5581 9755 11162 19510 27905 37069 55810 74138 106039 185345 212078 370690 530195 1060390 10888531 21777062 54442655 108885310 206882089 413764178 1034410445 2068820890