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86106879 = 3219503549
BaseRepresentation
bin1010010000111…
…10001011111111
320000000200102200
411020132023333
5134020410004
612313322543
72063616315
oct510361377
9200020380
1086106879
1144672411
1224a06453
1314abac21
14b6160b5
15785d239
hex521e2ff

86106879 has 12 divisors (see below), whose sum is σ = 130923000. Its totient is φ = 54383184.

The previous prime is 86106857. The next prime is 86106893. The reversal of 86106879 is 97860168.

It is a happy number.

It is not a de Polignac number, because 86106879 - 29 = 86106367 is a prime.

It is a super-2 number, since 2×861068792 = 14828789222241282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86106899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251604 + ... + 251945.

It is an arithmetic number, because the mean of its divisors is an integer number (10910250).

Almost surely, 286106879 is an apocalyptic number.

86106879 is a deficient number, since it is larger than the sum of its proper divisors (44816121).

86106879 is a wasteful number, since it uses less digits than its factorization.

86106879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503574 (or 503571 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 86106879 is about 9279.3792357032. The cubic root of 86106879 is about 441.5832749800.

The spelling of 86106879 in words is "eighty-six million, one hundred six thousand, eight hundred seventy-nine".

Divisors: 1 3 9 19 57 171 503549 1510647 4531941 9567431 28702293 86106879