Search a number
-
+
87045370 = 2528130977
BaseRepresentation
bin1010011000000…
…11010011111010
320001210100210121
411030003103322
5134240422440
612345403454
72104605406
oct514032372
9201710717
1087045370
1145153525
122519958a
1315059149
14b7bc106
15799634a
hex53034fa

87045370 has 16 divisors (see below), whose sum is σ = 157244328. Its totient is φ = 34693120.

The previous prime is 87045367. The next prime is 87045377. The reversal of 87045370 is 7354078.

It can be written as a sum of positive squares in 4 ways, for example, as 87030241 + 15129 = 9329^2 + 123^2 .

It is not an unprimeable number, because it can be changed into a prime (87045377) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12679 + ... + 18298.

Almost surely, 287045370 is an apocalyptic number.

87045370 is a deficient number, since it is larger than the sum of its proper divisors (70198958).

87045370 is a wasteful number, since it uses less digits than its factorization.

87045370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31265.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 87045370 is about 9329.8108233769. The cubic root of 87045370 is about 443.1817743127.

The spelling of 87045370 in words is "eighty-seven million, forty-five thousand, three hundred seventy".

Divisors: 1 2 5 10 281 562 1405 2810 30977 61954 154885 309770 8704537 17409074 43522685 87045370