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139791190 = 25711712557
BaseRepresentation
bin10000101010100…
…00101101010110
3100202001010110111
420111100231112
5241241304230
621512113234
73315130330
oct1025205526
9322033414
10139791190
11719aa210
123a99581a
1322c662a6
14147cc450
15c41492a
hex8550b56

139791190 has 64 divisors (see below), whose sum is σ = 318256128. Its totient is φ = 42940800.

The previous prime is 139791161. The next prime is 139791193. The reversal of 139791190 is 91197931.

It is a super-2 number, since 2×1397911902 = 39083153603232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139791193) 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, 53392 + ... + 55948.

It is an arithmetic number, because the mean of its divisors is an integer number (4972752).

Almost surely, 2139791190 is an apocalyptic number.

139791190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139791190 is an abundant number, since it is smaller than the sum of its proper divisors (178464938).

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

139791190 is a wasteful number, since it uses less digits than its factorization.

139791190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653.

The product of its (nonzero) digits is 15309, while the sum is 40.

The square root of 139791190 is about 11823.3324405601. The cubic root of 139791190 is about 518.9911282349.

The spelling of 139791190 in words is "one hundred thirty-nine million, seven hundred ninety-one thousand, one hundred ninety".

Divisors: 1 2 5 7 10 11 14 22 35 55 70 71 77 110 142 154 355 385 497 710 770 781 994 1562 2485 2557 3905 4970 5114 5467 7810 10934 12785 17899 25570 27335 28127 35798 54670 56254 89495 140635 178990 181547 196889 281270 363094 393778 907735 984445 1270829 1815470 1968890 1997017 2541658 3994034 6354145 9985085 12708290 13979119 19970170 27958238 69895595 139791190