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69993070 = 2572831721
BaseRepresentation
bin1000010110000…
…00001001101110
311212201000102221
410023000021232
5120404234240
610540105554
71506634300
oct413001156
9155630387
1069993070
1136566914
121b5352ba
1311668624
14941d970
156228a4a
hex42c026e

69993070 has 48 divisors (see below), whose sum is σ = 148408848. Its totient is φ = 23694720.

The previous prime is 69993059. The next prime is 69993073. The reversal of 69993070 is 7039996.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69993073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39810 + ... + 41530.

It is an arithmetic number, because the mean of its divisors is an integer number (3091851).

Almost surely, 269993070 is an apocalyptic number.

69993070 is an abundant number, since it is smaller than the sum of its proper divisors (78415778).

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

69993070 is a wasteful number, since it uses less digits than its factorization.

69993070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825 (or 1818 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 69993070 is about 8366.1861083770. The cubic root of 69993070 is about 412.1149292905.

The spelling of 69993070 in words is "sixty-nine million, nine hundred ninety-three thousand, seventy".

Divisors: 1 2 5 7 10 14 35 49 70 83 98 166 245 415 490 581 830 1162 1721 2905 3442 4067 5810 8134 8605 12047 17210 20335 24094 40670 60235 84329 120470 142843 168658 285686 421645 714215 843290 999901 1428430 1999802 4999505 6999307 9999010 13998614 34996535 69993070