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20746260 = 22335103373
BaseRepresentation
bin100111100100…
…1000000010100
31110001000112000
41033021000110
520302340020
62020355300
7341224503
oct117110024
943030460
1020746260
111078aa77
126b45b30
1343b4cc2
142a8083a
151c4c090
hex13c9014

20746260 has 96 divisors (see below), whose sum is σ = 65345280. Its totient is φ = 5463936.

The previous prime is 20746249. The next prime is 20746277. The reversal of 20746260 is 6264702.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

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, 55434 + ... + 55806.

It is an arithmetic number, because the mean of its divisors is an integer number (680680).

Almost surely, 220746260 is an apocalyptic number.

20746260 is a gapful number since it is divisible by the number (20) 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 20746260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32672640).

20746260 is an abundant number, since it is smaller than the sum of its proper divisors (44599020).

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

20746260 is a wasteful number, since it uses less digits than its factorization.

20746260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20746260 is about 4554.8062527401. The cubic root of 20746260 is about 274.7767223470.

The spelling of 20746260 in words is "twenty million, seven hundred forty-six thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 103 108 135 180 206 270 309 373 412 515 540 618 746 927 1030 1119 1236 1492 1545 1854 1865 2060 2238 2781 3090 3357 3708 3730 4476 4635 5562 5595 6180 6714 7460 9270 10071 11124 11190 13428 13905 16785 18540 20142 22380 27810 33570 38419 40284 50355 55620 67140 76838 100710 115257 153676 192095 201420 230514 345771 384190 461028 576285 691542 768380 1037313 1152570 1383084 1728855 2074626 2305140 3457710 4149252 5186565 6915420 10373130 20746260