Search a number
-
+
87380558 = 2431016053
BaseRepresentation
bin1010011010101…
…01001001001110
320002102101120222
411031111021032
5134332134213
612400511342
72110502546
oct515251116
9202371528
1087380558
1145362341
122531b552
1315145895
14b868326
157a10808
hex535524e

87380558 has 8 divisors (see below), whose sum is σ = 134119128. Its totient is φ = 42674184.

The previous prime is 87380533. The next prime is 87380597. The reversal of 87380558 is 85508378.

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

It is a super-3 number, since 3×873805583 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507941 + ... + 508112.

It is an arithmetic number, because the mean of its divisors is an integer number (16764891).

Almost surely, 287380558 is an apocalyptic number.

87380558 is a deficient number, since it is larger than the sum of its proper divisors (46738570).

87380558 is a wasteful number, since it uses less digits than its factorization.

87380558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016098.

The product of its (nonzero) digits is 268800, while the sum is 44.

The square root of 87380558 is about 9347.7568432218. The cubic root of 87380558 is about 443.7499031144.

The spelling of 87380558 in words is "eighty-seven million, three hundred eighty thousand, five hundred fifty-eight".

Divisors: 1 2 43 86 1016053 2032106 43690279 87380558