Search a number
-
+
87387070 = 258738707
BaseRepresentation
bin1010011010101…
…10101110111110
320002102201112011
411031112232332
5134332341240
612401001434
72110530541
oct515265676
9202381464
1087387070
1145367221
122532327a
1315148834
14b86a858
157a126ea
hex5356bbe

87387070 has 8 divisors (see below), whose sum is σ = 157296744. Its totient is φ = 34954824.

The previous prime is 87387067. The next prime is 87387077. The reversal of 87387070 is 7078378.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87387077) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4369344 + ... + 4369363.

It is an arithmetic number, because the mean of its divisors is an integer number (19662093).

Almost surely, 287387070 is an apocalyptic number.

87387070 is a deficient number, since it is larger than the sum of its proper divisors (69909674).

87387070 is a wasteful number, since it uses less digits than its factorization.

87387070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8738714.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 87387070 is about 9348.1051555917. The cubic root of 87387070 is about 443.7609262667.

The spelling of 87387070 in words is "eighty-seven million, three hundred eighty-seven thousand, seventy".

Divisors: 1 2 5 10 8738707 17477414 43693535 87387070