Search a number
-
+
87048645 = 3511874889
BaseRepresentation
bin1010011000001…
…00000111000101
320001210112021220
411030010013011
5134241024040
612345430553
72104621065
oct514040705
9201715256
1087048645
1145155a32
122519b459
131505a798
14b7bd3a5
1579972d0
hex53041c5

87048645 has 16 divisors (see below), whose sum is σ = 139423680. Its totient is φ = 46377344.

The previous prime is 87048601. The next prime is 87048649. The reversal of 87048645 is 54684078.

It is a cyclic number.

It is not a de Polignac number, because 87048645 - 26 = 87048581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87048597 and 87048606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87048649) 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, 15361 + ... + 20249.

It is an arithmetic number, because the mean of its divisors is an integer number (8713980).

Almost surely, 287048645 is an apocalyptic number.

It is an amenable number.

87048645 is a deficient number, since it is larger than the sum of its proper divisors (52375035).

87048645 is a wasteful number, since it uses less digits than its factorization.

87048645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6084.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 87048645 is about 9329.9863343951. The cubic root of 87048645 is about 443.1873323419.

The spelling of 87048645 in words is "eighty-seven million, forty-eight thousand, six hundred forty-five".

Divisors: 1 3 5 15 1187 3561 4889 5935 14667 17805 24445 73335 5803243 17409729 29016215 87048645