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1906228071 = 3211217102967
BaseRepresentation
bin111000110011110…
…1011101101100111
311220211220102022200
41301213223231213
512400443244241
6513053025543
765144446146
oct16147535547
94824812280
101906228071
1189901a400
124524852b3
13244c04607
1414124975d
15b253d4b6
hex719ebb67

1906228071 has 36 divisors (see below), whose sum is σ = 3204570096. Its totient is φ = 1087320960.

The previous prime is 1906228043. The next prime is 1906228081. The reversal of 1906228071 is 1708226091.

It is not a de Polignac number, because 1906228071 - 213 = 1906219879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906228081) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 32971 + ... + 69996.

It is an arithmetic number, because the mean of its divisors is an integer number (89015836).

Almost surely, 21906228071 is an apocalyptic number.

1906228071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1906228071 is a deficient number, since it is larger than the sum of its proper divisors (1298342025).

1906228071 is a wasteful number, since it uses less digits than its factorization.

1906228071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103012 (or 102998 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1906228071 is about 43660.3718605328. The cubic root of 1906228071 is about 1239.9141613750.

The spelling of 1906228071 in words is "one billion, nine hundred six million, two hundred twenty-eight thousand, seventy-one".

Divisors: 1 3 9 11 17 33 51 99 121 153 187 363 561 1089 1683 2057 6171 18513 102967 308901 926703 1132637 1750439 3397911 5251317 10193733 12459007 15753951 19254829 37377021 57764487 112131063 173293461 211803119 635409357 1906228071