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31494060 = 223251343313
BaseRepresentation
bin111100000100…
…0111110101100
32012021001201200
41320020332230
531030302220
63043005500
7531460263
oct170107654
965231650
1031494060
1116860a54
12a669890
1366a9050
14427b5da
152b71890
hex1e08fac

31494060 has 144 divisors (see below), whose sum is σ = 105609504. Its totient is φ = 7547904.

The previous prime is 31494053. The next prime is 31494079. The reversal of 31494060 is 6049413.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100464 + ... + 100776.

Almost surely, 231494060 is an apocalyptic number.

31494060 is a gapful number since it is divisible by the number (30) 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 31494060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52804752).

31494060 is an abundant number, since it is smaller than the sum of its proper divisors (74115444).

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

31494060 is a wasteful number, since it uses less digits than its factorization.

31494060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 31494060 is about 5611.9568779526. The cubic root of 31494060 is about 315.7981272190.

The spelling of 31494060 in words is "thirty-one million, four hundred ninety-four thousand, sixty".

Divisors: 1 2 3 4 5 6 9 10 12 13 15 18 20 26 30 36 39 43 45 52 60 65 78 86 90 117 129 130 156 172 180 195 215 234 258 260 313 387 390 430 468 516 559 585 626 645 774 780 860 939 1118 1170 1252 1290 1548 1565 1677 1878 1935 2236 2340 2580 2795 2817 3130 3354 3756 3870 4069 4695 5031 5590 5634 6260 6708 7740 8138 8385 9390 10062 11180 11268 12207 13459 14085 16276 16770 18780 20124 20345 24414 25155 26918 28170 33540 36621 40377 40690 48828 50310 53836 56340 61035 67295 73242 80754 81380 100620 121131 122070 134590 146484 161508 174967 183105 201885 242262 244140 269180 349934 366210 403770 484524 524901 605655 699868 732420 807540 874835 1049802 1211310 1574703 1749670 2099604 2422620 2624505 3149406 3499340 5249010 6298812 7873515 10498020 15747030 31494060