Search a number
-
+
86830969 = 192317759
BaseRepresentation
bin1010010110011…
…10111101111001
320001101110200211
411023032331321
5134212042334
612341031121
72103023341
oct513167571
9201343624
1086830969
1145017435
12250b54a1
1314cb2694
14b763d21
157952a64
hex52cef79

86830969 has 12 divisors (see below), whose sum is σ = 94609920. Its totient is φ = 79597080.

The previous prime is 86830963. The next prime is 86830973. The reversal of 86830969 is 96903868.

It is a de Polignac number, because none of the positive numbers 2k-86830969 is a prime.

It is a super-2 number, since 2×868309692 = 15079234354957922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86830963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7312 + ... + 15070.

It is an arithmetic number, because the mean of its divisors is an integer number (7884160).

Almost surely, 286830969 is an apocalyptic number.

It is an amenable number.

86830969 is a deficient number, since it is larger than the sum of its proper divisors (7778951).

86830969 is a wasteful number, since it uses less digits than its factorization.

86830969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7828 (or 7809 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 86830969 is about 9318.3136349878. The cubic root of 86830969 is about 442.8176089133.

The spelling of 86830969 in words is "eighty-six million, eight hundred thirty thousand, nine hundred sixty-nine".

Divisors: 1 19 31 361 589 7759 11191 147421 240529 2800999 4570051 86830969