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86380013 = 257336109
BaseRepresentation
bin1010010011000…
…00110111101101
320000112120002202
411021200313231
5134103130023
612323231245
72066134526
oct511406755
9200476082
1086380013
1144839645
1224b18525
1314b85345
14b68784d
1578b4128
hex5260ded

86380013 has 4 divisors (see below), whose sum is σ = 86716380. Its totient is φ = 86043648.

The previous prime is 86379961. The next prime is 86380027. The reversal of 86380013 is 31008368.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84695209 + 1684804 = 9203^2 + 1298^2 .

It is a cyclic number.

It is not a de Polignac number, because 86380013 - 216 = 86314477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86380033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167798 + ... + 168311.

It is an arithmetic number, because the mean of its divisors is an integer number (21679095).

Almost surely, 286380013 is an apocalyptic number.

It is an amenable number.

86380013 is a deficient number, since it is larger than the sum of its proper divisors (336367).

86380013 is a wasteful number, since it uses less digits than its factorization.

86380013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336366.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 86380013 is about 9294.0848392943. The cubic root of 86380013 is about 442.0496879775.

The spelling of 86380013 in words is "eighty-six million, three hundred eighty thousand, thirteen".

Divisors: 1 257 336109 86380013