Search a number
-
+
87475371 = 3238811439
BaseRepresentation
bin1010011011011…
…00010010101011
320002121012122120
411031230102223
5134343202441
612402522323
72111346144
oct515542253
9202535576
1087475371
11454175a5
12253663a3
1315179a99
14b890acb
157a2d966
hex536c4ab

87475371 has 16 divisors (see below), whose sum is σ = 121927680. Its totient is φ = 55679360.

The previous prime is 87475369. The next prime is 87475429. The reversal of 87475371 is 17357478.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 87475371 - 21 = 87475369 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (87475301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60070 + ... + 61508.

It is an arithmetic number, because the mean of its divisors is an integer number (7620480).

Almost surely, 287475371 is an apocalyptic number.

87475371 is a deficient number, since it is larger than the sum of its proper divisors (34452309).

87475371 is a wasteful number, since it uses less digits than its factorization.

87475371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346.

The product of its digits is 164640, while the sum is 42.

The square root of 87475371 is about 9352.8268988579. The cubic root of 87475371 is about 443.9103432718.

It can be divided in two parts, 874 and 75371, that added together give a triangular number (76245 = T390).

The spelling of 87475371 in words is "eighty-seven million, four hundred seventy-five thousand, three hundred seventy-one".

Divisors: 1 3 23 69 881 1439 2643 4317 20263 33097 60789 99291 1267759 3803277 29158457 87475371