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86138488 = 23103104537
BaseRepresentation
bin1010010001001…
…01111001111000
320000002021210101
411020211321320
5134022412423
612314125144
72064110422
oct510457170
9200067711
1086138488
1144694137
1224a207b4
1314acc427
14b623812
1578677ad
hex5225e78

86138488 has 16 divisors (see below), whose sum is σ = 163079280. Its totient is φ = 42650688.

The previous prime is 86138453. The next prime is 86138489. The reversal of 86138488 is 88483168.

It is a super-2 number, since 2×861384882 = 14839678229852288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86138489) 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 3 ways as a sum of consecutive naturals, for example, 51445 + ... + 53092.

It is an arithmetic number, because the mean of its divisors is an integer number (10192455).

Almost surely, 286138488 is an apocalyptic number.

It is an amenable number.

86138488 is a deficient number, since it is larger than the sum of its proper divisors (76940792).

86138488 is a wasteful number, since it uses less digits than its factorization.

86138488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104646 (or 104642 counting only the distinct ones).

The product of its digits is 294912, while the sum is 46.

The square root of 86138488 is about 9281.0822644776. The cubic root of 86138488 is about 441.6373020151.

The spelling of 86138488 in words is "eighty-six million, one hundred thirty-eight thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 103 206 412 824 104537 209074 418148 836296 10767311 21534622 43069244 86138488