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78260 = 22571343
BaseRepresentation
bin10011000110110100
310222100112
4103012310
510001020
61402152
7444110
oct230664
9128315
1078260
1153886
1239358
1329810
1420740
15182c5
hex131b4

78260 has 48 divisors (see below), whose sum is σ = 206976. Its totient is φ = 24192.

The previous prime is 78259. The next prime is 78277. The reversal of 78260 is 6287.

It is a super-2 number, since 2×782602 = 12249255200, which contains 22 as substring.

It is a nialpdrome in base 7.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 78260.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1799 + ... + 1841.

It is an arithmetic number, because the mean of its divisors is an integer number (4312).

278260 is an apocalyptic number.

78260 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103488).

78260 is an abundant number, since it is smaller than the sum of its proper divisors (128716).

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

78260 is a wasteful number, since it uses less digits than its factorization.

78260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 78260 is about 279.7498882931. The cubic root of 78260 is about 42.7740081509.

The spelling of 78260 in words is "seventy-eight thousand, two hundred sixty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 43 52 65 70 86 91 130 140 172 182 215 260 301 364 430 455 559 602 860 910 1118 1204 1505 1820 2236 2795 3010 3913 5590 6020 7826 11180 15652 19565 39130 78260