Search a number
-
+
87896320 = 28568669
BaseRepresentation
bin1010011110100…
…11000100000000
320010101121002021
411033103010000
5140000140240
612415531224
72115051331
oct517230400
9203347067
1087896320
1145684896
1225529b14
1315296575
14b960288
157ab354a
hex53d3100

87896320 has 36 divisors (see below), whose sum is σ = 210542220. Its totient is φ = 35158016.

The previous prime is 87896309. The next prime is 87896321. The reversal of 87896320 is 2369878.

It can be written as a sum of positive squares in 2 ways, for example, as 68956416 + 18939904 = 8304^2 + 4352^2 .

It is not an unprimeable number, because it can be changed into a prime (87896321) 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, 33055 + ... + 35614.

It is an arithmetic number, because the mean of its divisors is an integer number (5848395).

Almost surely, 287896320 is an apocalyptic number.

87896320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87896320 is an abundant number, since it is smaller than the sum of its proper divisors (122645900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87896320 is an equidigital number, since it uses as much as digits as its factorization.

87896320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68690 (or 68676 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 87896320 is about 9375.3037284133. The cubic root of 87896320 is about 444.6212659388.

The spelling of 87896320 in words is "eighty-seven million, eight hundred ninety-six thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 640 1280 68669 137338 274676 343345 549352 686690 1098704 1373380 2197408 2746760 4394816 5493520 8789632 10987040 17579264 21974080 43948160 87896320