Search a number
-
+
87648082 = 243824041
BaseRepresentation
bin1010011100101…
…10011101010010
320002220222120021
411032112131102
5134414214312
612410334054
72112665524
oct516263522
9202828507
1087648082
1145525335
122542a32a
131520a592
14b8d7a14
157a64c07
hex5396752

87648082 has 4 divisors (see below), whose sum is σ = 131472126. Its totient is φ = 43824040.

The previous prime is 87648059. The next prime is 87648089. The reversal of 87648082 is 28084678.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28084678 = 214042339.

It can be written as a sum of positive squares in only one way, i.e., 85211361 + 2436721 = 9231^2 + 1561^2 .

It is not an unprimeable number, because it can be changed into a prime (87648089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21912019 + ... + 21912022.

Almost surely, 287648082 is an apocalyptic number.

87648082 is a deficient number, since it is larger than the sum of its proper divisors (43824044).

87648082 is a wasteful number, since it uses less digits than its factorization.

87648082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43824043.

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 87648082 is about 9362.0554367083. The cubic root of 87648082 is about 444.2023027719.

The spelling of 87648082 in words is "eighty-seven million, six hundred forty-eight thousand, eighty-two".

Divisors: 1 2 43824041 87648082