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748742680 = 235717914939
BaseRepresentation
bin101100101000001…
…110100000011000
31221011220001212101
4230220032200120
53013134231210
6202144053144
724361131160
oct5450164030
91834801771
10748742680
11354711504
1218a9041b4
13bc17740a
14716255a0
1545aeea3a
hex2ca0e818

748742680 has 64 divisors (see below), whose sum is σ = 1936224000. Its totient is φ = 255260544.

The previous prime is 748742653. The next prime is 748742689. The reversal of 748742680 is 86247847.

It is a self number, because there is not a number n which added to its sum of digits gives 748742680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748742689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42651 + ... + 57589.

It is an arithmetic number, because the mean of its divisors is an integer number (30253500).

Almost surely, 2748742680 is an apocalyptic number.

748742680 is a gapful number since it is divisible by the number (70) 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 748742680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968112000).

748742680 is an abundant number, since it is smaller than the sum of its proper divisors (1187481320).

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

748742680 is a wasteful number, since it uses less digits than its factorization.

748742680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15136 (or 15132 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 46.

The square root of 748742680 is about 27363.1628288837. The cubic root of 748742680 is about 908.0523008681.

The spelling of 748742680 in words is "seven hundred forty-eight million, seven hundred forty-two thousand, six hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 179 280 358 716 895 1253 1432 1790 2506 3580 5012 6265 7160 10024 12530 14939 25060 29878 50120 59756 74695 104573 119512 149390 209146 298780 418292 522865 597560 836584 1045730 2091460 2674081 4182920 5348162 10696324 13370405 18718567 21392648 26740810 37437134 53481620 74874268 93592835 106963240 149748536 187185670 374371340 748742680