Search a number
-
+
87448025 = 5274311621
BaseRepresentation
bin1010011011001…
…01100111011001
320002112211010202
411031211213121
5134341314100
612402151545
72111203340
oct515454731
9202484122
1087448025
11453a8aa5
12253525b5
131516a4c2
14b884b57
157a257d5
hex53659d9

87448025 has 24 divisors (see below), whose sum is σ = 126819264. Its totient is φ = 58564800.

The previous prime is 87448007. The next prime is 87448037. The reversal of 87448025 is 52084478.

It is not a de Polignac number, because 87448025 - 28 = 87447769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87448025.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1715 + ... + 13335.

It is an arithmetic number, because the mean of its divisors is an integer number (5284136).

Almost surely, 287448025 is an apocalyptic number.

It is an amenable number.

87448025 is a deficient number, since it is larger than the sum of its proper divisors (39371239).

87448025 is a wasteful number, since it uses less digits than its factorization.

87448025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11681 (or 11676 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 87448025 is about 9351.3648736428. The cubic root of 87448025 is about 443.8640809647.

The spelling of 87448025 in words is "eighty-seven million, four hundred forty-eight thousand, twenty-five".

Divisors: 1 5 7 25 35 43 175 215 301 1075 1505 7525 11621 58105 81347 290525 406735 499703 2033675 2498515 3497921 12492575 17489605 87448025