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69680304 = 24331011597
BaseRepresentation
bin1000010011100…
…11110010110000
311212010010102000
410021303302300
5120314232204
610525254000
71504162401
oct411636260
9155103360
1069680304
1136372931
121b404300
1311589165
14937b9a8
1561b6039
hex4273cb0

69680304 has 80 divisors (see below), whose sum is σ = 202115040. Its totient is φ = 22982400.

The previous prime is 69680269. The next prime is 69680327. The reversal of 69680304 is 40308696.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 42834 + ... + 44430.

It is an arithmetic number, because the mean of its divisors is an integer number (2526438).

Almost surely, 269680304 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 69680304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101057520).

69680304 is an abundant number, since it is smaller than the sum of its proper divisors (132434736).

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

69680304 is a wasteful number, since it uses less digits than its factorization.

69680304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715 (or 1703 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 69680304 is about 8347.4729110073. The cubic root of 69680304 is about 411.5001636329.

The spelling of 69680304 in words is "sixty-nine million, six hundred eighty thousand, three hundred four".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 101 108 144 202 216 303 404 432 606 808 909 1212 1597 1616 1818 2424 2727 3194 3636 4791 4848 5454 6388 7272 9582 10908 12776 14373 14544 19164 21816 25552 28746 38328 43119 43632 57492 76656 86238 114984 161297 172476 229968 322594 344952 483891 645188 689904 967782 1290376 1451673 1935564 2580752 2903346 3871128 4355019 5806692 7742256 8710038 11613384 17420076 23226768 34840152 69680304