Search a number
-
+
87390695 = 579725741
BaseRepresentation
bin1010011010101…
…11100111100111
320002102220111102
411031113213213
5134333000240
612401030315
72110544240
oct515274747
9202386442
1087390695
1145369a17
122532539b
131514a392
14b86bcc7
157a13815
hex53579e7

87390695 has 16 divisors (see below), whose sum is σ = 121090368. Its totient is φ = 59304960.

The previous prime is 87390679. The next prime is 87390701. The reversal of 87390695 is 59609378.

It is not a de Polignac number, because 87390695 - 24 = 87390679 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9476 + ... + 16265.

It is an arithmetic number, because the mean of its divisors is an integer number (7568148).

Almost surely, 287390695 is an apocalyptic number.

87390695 is a deficient number, since it is larger than the sum of its proper divisors (33699673).

87390695 is a wasteful number, since it uses less digits than its factorization.

87390695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25850.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 87390695 is about 9348.2990431415. The cubic root of 87390695 is about 443.7670622283.

The spelling of 87390695 in words is "eighty-seven million, three hundred ninety thousand, six hundred ninety-five".

Divisors: 1 5 7 35 97 485 679 3395 25741 128705 180187 900935 2496877 12484385 17478139 87390695