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68901828 = 223192331297
BaseRepresentation
bin1000001101101…
…01101111000100
311210122120112120
410012311233010
5120114324303
610500445540
71464440652
oct406655704
9153576476
1068901828
1135990a66
121b0a98b0
1311375a18
149217dd2
1560b0553
hex41b5bc4

68901828 has 48 divisors (see below), whose sum is σ = 170089920. Its totient is φ = 21648384.

The previous prime is 68901827. The next prime is 68901841. The reversal of 68901828 is 82810986.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 68901828.

It is not an unprimeable number, because it can be changed into a prime (68901827) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 52476 + ... + 53772.

It is an arithmetic number, because the mean of its divisors is an integer number (3543540).

Almost surely, 268901828 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 68901828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85044960).

68901828 is an abundant number, since it is smaller than the sum of its proper divisors (101188092).

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

68901828 is a wasteful number, since it uses less digits than its factorization.

68901828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556 (or 1554 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 68901828 is about 8300.7124995388. The cubic root of 68901828 is about 409.9619794210.

The spelling of 68901828 in words is "sixty-eight million, nine hundred one thousand, eight hundred twenty-eight".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 233 466 699 932 1297 1398 2594 2796 3891 4427 5188 7782 8854 13281 15564 17708 24643 26562 49286 53124 73929 98572 147858 295716 302201 604402 906603 1208804 1813206 3626412 5741819 11483638 17225457 22967276 34450914 68901828