Search a number
-
+
87331504873 = 237948063569
BaseRepresentation
bin101000101010101011…
…1010000001011101001
322100102021122002222111
41101111113100023221
52412323331123443
6104041453122321
76211104354244
oct1212527201351
9270367562874
1087331504873
11340453a3218
1214b131893a1
13830a019792
14432674a25b
152411e6b69d
hex14555d02e9

87331504873 has 8 divisors (see below), whose sum is σ = 92282054400. Its totient is φ = 82477082688.

The previous prime is 87331504861. The next prime is 87331504901. The reversal of 87331504873 is 37840513378.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-87331504873 is a prime.

It is a super-2 number, since 2×873315048732 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87331504573) 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 7 ways as a sum of consecutive naturals, for example, 24029968 + ... + 24033601.

It is an arithmetic number, because the mean of its divisors is an integer number (11535256800).

Almost surely, 287331504873 is an apocalyptic number.

It is an amenable number.

87331504873 is a deficient number, since it is larger than the sum of its proper divisors (4950549527).

87331504873 is a wasteful number, since it uses less digits than its factorization.

87331504873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48063671.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 87331504873 in words is "eighty-seven billion, three hundred thirty-one million, five hundred four thousand, eight hundred seventy-three".

Divisors: 1 23 79 1817 48063569 1105462087 3797021951 87331504873