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117390 = 23571343
BaseRepresentation
bin11100101010001110
312222000210
4130222032
512224030
62303250
7666150
oct345216
9188023
10117390
1180219
1257b26
1341580
1430ad0
1524bb0
hex1ca8e

117390 has 64 divisors (see below), whose sum is σ = 354816. Its totient is φ = 24192.

The previous prime is 117389. The next prime is 117413. The reversal of 117390 is 93711.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2709 + ... + 2751.

It is an arithmetic number, because the mean of its divisors is an integer number (5544).

2117390 is an apocalyptic number.

117390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177408).

117390 is an abundant number, since it is smaller than the sum of its proper divisors (237426).

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

117390 is a wasteful number, since it uses less digits than its factorization.

117390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73.

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 117390 is about 342.6222409593. The cubic root of 117390 is about 48.9640163415.

It can be divided in two parts, 1173 and 90, that multiplied together give a triangular number (105570 = T459).

The spelling of 117390 in words is "one hundred seventeen thousand, three hundred ninety".

Divisors: 1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 43 65 70 78 86 91 105 129 130 182 195 210 215 258 273 301 390 430 455 546 559 602 645 903 910 1118 1290 1365 1505 1677 1806 2730 2795 3010 3354 3913 4515 5590 7826 8385 9030 11739 16770 19565 23478 39130 58695 117390