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68834528 = 257487631
BaseRepresentation
bin1000001101001…
…01010011100000
311210112011012222
410012211103200
5120110201103
610455210212
71464040520
oct406452340
9153464188
1068834528
1135945444
121b076968
13113511b9
1491db680
15609a638
hex41a54e0

68834528 has 48 divisors (see below), whose sum is σ = 155441664. Its totient is φ = 29393280.

The previous prime is 68834509. The next prime is 68834537. The reversal of 68834528 is 82543886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108773 + ... + 109403.

It is an arithmetic number, because the mean of its divisors is an integer number (3238368).

Almost surely, 268834528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68834528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77720832).

68834528 is an abundant number, since it is smaller than the sum of its proper divisors (86607136).

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

68834528 is a wasteful number, since it uses less digits than its factorization.

68834528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1127 counting only the distinct ones).

The product of its digits is 368640, while the sum is 44.

The square root of 68834528 is about 8296.6576402790. The cubic root of 68834528 is about 409.8284588749.

It can be divided in two parts, 6883 and 4528, that added together give a palindrome (11411).

The spelling of 68834528 in words is "sixty-eight million, eight hundred thirty-four thousand, five hundred twenty-eight".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 487 631 974 1262 1948 2524 3409 3896 4417 5048 6818 7792 8834 10096 13636 15584 17668 20192 27272 35336 54544 70672 109088 141344 307297 614594 1229188 2151079 2458376 4302158 4916752 8604316 9833504 17208632 34417264 68834528