Search a number
-
+
87002923 = 717731117
BaseRepresentation
bin1010010111110…
…00111100101011
320001201012120111
411023320330223
5134233043143
612344435151
72104340560
oct513707453
9201635514
1087002923
1145124647
1225178ab7
1315042a27
14b7aa867
15798899d
hex52f8f2b

87002923 has 8 divisors (see below), whose sum is σ = 105280992. Its totient is φ = 70187136.

The previous prime is 87002921. The next prime is 87002941. The reversal of 87002923 is 32920078.

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

It is a cyclic number.

It is not a de Polignac number, because 87002923 - 21 = 87002921 is a prime.

It is a super-2 number, since 2×870029232 = 15139017221087858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87002921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365440 + ... + 365677.

It is an arithmetic number, because the mean of its divisors is an integer number (13160124).

Almost surely, 287002923 is an apocalyptic number.

87002923 is a deficient number, since it is larger than the sum of its proper divisors (18278069).

87002923 is a wasteful number, since it uses less digits than its factorization.

87002923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731141.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 87002923 is about 9327.5357410197. The cubic root of 87002923 is about 443.1097245476.

The spelling of 87002923 in words is "eighty-seven million, two thousand, nine hundred twenty-three".

Divisors: 1 7 17 119 731117 5117819 12428989 87002923