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68628120 = 23351151991
BaseRepresentation
bin1000001011100…
…10111010011000
311210010200002020
410011302322120
5120032044440
610450534440
71462220661
oct405627230
9153120066
1068628120
1135814360
121ab97420
13112ab272
149186368
1560593d0
hex4172e98

68628120 has 64 divisors (see below), whose sum is σ = 224605440. Its totient is φ = 16636800.

The previous prime is 68628101. The next prime is 68628221. The reversal of 68628120 is 2182686.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24676 + ... + 27315.

It is an arithmetic number, because the mean of its divisors is an integer number (3509460).

Almost surely, 268628120 is an apocalyptic number.

68628120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68628120 is an abundant number, since it is smaller than the sum of its proper divisors (155977320).

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

68628120 is a wasteful number, since it uses less digits than its factorization.

68628120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52016 (or 52012 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 68628120 is about 8284.2090751019. The cubic root of 68628120 is about 409.4184099801.

The spelling of 68628120 in words is "sixty-eight million, six hundred twenty-eight thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 20 22 24 30 33 40 44 55 60 66 88 110 120 132 165 220 264 330 440 660 1320 51991 103982 155973 207964 259955 311946 415928 519910 571901 623892 779865 1039820 1143802 1247784 1559730 1715703 2079640 2287604 2859505 3119460 3431406 4575208 5719010 6238920 6862812 8578515 11438020 13725624 17157030 22876040 34314060 68628120