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139590 = 23351147
BaseRepresentation
bin100010000101000110
321002111000
4202011012
513431330
62554130
71120653
oct420506
9232430
10139590
1195970
1268946
134b6c9
1438c2a
152b560
hex22146

139590 has 64 divisors (see below), whose sum is σ = 414720. Its totient is φ = 33120.

The previous prime is 139589. The next prime is 139591. The reversal of 139590 is 95931.

It is an interprime number because it is at equal distance from previous prime (139589) and next prime (139591).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2947 + ... + 2993.

It is an arithmetic number, because the mean of its divisors is an integer number (6480).

2139590 is an apocalyptic number.

139590 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 139590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207360).

139590 is an abundant number, since it is smaller than the sum of its proper divisors (275130).

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

139590 is a wasteful number, since it uses less digits than its factorization.

139590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 139590 is about 373.6174514125. The cubic root of 139590 is about 51.8742028232.

It can be divided in two parts, 1395 and 90, that added together give a triangular number (1485 = T54).

The spelling of 139590 in words is "one hundred thirty-nine thousand, five hundred ninety".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 27 30 33 45 47 54 55 66 90 94 99 110 135 141 165 198 235 270 282 297 330 423 470 495 517 594 705 846 990 1034 1269 1410 1485 1551 2115 2538 2585 2970 3102 4230 4653 5170 6345 7755 9306 12690 13959 15510 23265 27918 46530 69795 139590