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86078888 = 23721712917
BaseRepresentation
bin1010010000101…
…11010110101000
312222222021000222
411020113112220
5134014011023
612312545212
72063441600
oct510272650
9188867028
1086078888
1144653385
12249b2208
1314aab26c
14b609c00
157854cc8
hex52175a8

86078888 has 48 divisors (see below), whose sum is σ = 198808020. Its totient is φ = 34718208.

The previous prime is 86078849. The next prime is 86078897. The reversal of 86078888 is 88887068.

It can be written as a sum of positive squares in 2 ways, for example, as 83576164 + 2502724 = 9142^2 + 1582^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206 + ... + 13122.

Almost surely, 286078888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86078888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99404010).

86078888 is an abundant number, since it is smaller than the sum of its proper divisors (112729132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86078888 is a wasteful number, since it uses less digits than its factorization.

86078888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12954 (or 12943 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 53.

The square root of 86078888 is about 9277.8708764457. The cubic root of 86078888 is about 441.5354208976.

The spelling of 86078888 in words is "eighty-six million, seventy-eight thousand, eight hundred eighty-eight".

Divisors: 1 2 4 7 8 14 17 28 34 49 56 68 98 119 136 196 238 392 476 833 952 1666 3332 6664 12917 25834 51668 90419 103336 180838 219589 361676 439178 632933 723352 878356 1265866 1537123 1756712 2531732 3074246 5063464 6148492 10759861 12296984 21519722 43039444 86078888