Search a number
-
+
87893055 = 32529471433
BaseRepresentation
bin1010011110100…
…10010000111111
320010101102121100
411033102100333
5140000034210
612415504143
72115035655
oct517222077
9203342540
1087893055
1145682398
1225528053
1315294c33
14b95cdd5
157ab25c0
hex53d243f

87893055 has 48 divisors (see below), whose sum is σ = 161066880. Its totient is φ = 44265984.

The previous prime is 87893041. The next prime is 87893059. The reversal of 87893055 is 55039878.

It is not a de Polignac number, because 87893055 - 28 = 87892799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87893055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87893059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60619 + ... + 62051.

It is an arithmetic number, because the mean of its divisors is an integer number (3355560).

Almost surely, 287893055 is an apocalyptic number.

87893055 is a deficient number, since it is larger than the sum of its proper divisors (73173825).

87893055 is a wasteful number, since it uses less digits than its factorization.

87893055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520 (or 1517 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 87893055 is about 9375.1295991042. The cubic root of 87893055 is about 444.6157605646.

The spelling of 87893055 in words is "eighty-seven million, eight hundred ninety-three thousand, fifty-five".

Divisors: 1 3 5 9 15 29 45 47 87 141 145 235 261 423 435 705 1305 1363 1433 2115 4089 4299 6815 7165 12267 12897 20445 21495 41557 61335 64485 67351 124671 202053 207785 336755 374013 606159 623355 1010265 1870065 1953179 3030795 5859537 9765895 17578611 29297685 87893055