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1928282029 = 4147031269
BaseRepresentation
bin111001011101111…
…0011111110101101
311222101101212122221
41302323303332231
512422120011104
6515201435341
765533061332
oct16273637655
94871355587
101928282029
118aa512913
1245993bb51
132496568ab
1414414a989
15b4447c54
hex72ef3fad

1928282029 has 4 divisors (see below), whose sum is σ = 1975313340. Its totient is φ = 1881250720.

The previous prime is 1928282017. The next prime is 1928282053. The reversal of 1928282029 is 9202828291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9202828291 = 12497736403.

It can be written as a sum of positive squares in 2 ways, for example, as 161340804 + 1766941225 = 12702^2 + 42035^2 .

It is a cyclic number.

It is not a de Polignac number, because 1928282029 - 25 = 1928281997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928282009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23515594 + ... + 23515675.

It is an arithmetic number, because the mean of its divisors is an integer number (493828335).

Almost surely, 21928282029 is an apocalyptic number.

It is an amenable number.

1928282029 is a deficient number, since it is larger than the sum of its proper divisors (47031311).

1928282029 is an equidigital number, since it uses as much as digits as its factorization.

1928282029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47031310.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 1928282029 is about 43912.2081999983. The cubic root of 1928282029 is about 1244.6775354496.

The spelling of 1928282029 in words is "one billion, nine hundred twenty-eight million, two hundred eighty-two thousand, twenty-nine".

Divisors: 1 41 47031269 1928282029