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69884248890 = 23517219794073
BaseRepresentation
bin100000100010101101…
…1010000001100111010
320200101100112200012110
41001011123100030322
52121110331431030
652034313553150
75022540212601
oct1010533201472
9220340480173
1069884248890
11277019225a5
12116641157b6
13678947a681
14354d4c4a38
151c403991b0
hex10456d033a

69884248890 has 96 divisors (see below), whose sum is σ = 178302358080. Its totient is φ = 17526409216.

The previous prime is 69884248883. The next prime is 69884248891. The reversal of 69884248890 is 9884248896.

It is a happy number.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (69884248891) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17155894 + ... + 17159966.

It is an arithmetic number, because the mean of its divisors is an integer number (1857316230).

Almost surely, 269884248890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69884248890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89151179040).

69884248890 is an abundant number, since it is smaller than the sum of its proper divisors (108418109190).

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

69884248890 is a wasteful number, since it uses less digits than its factorization.

69884248890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6096 (or 6079 counting only the distinct ones).

The product of its (nonzero) digits is 63700992, while the sum is 66.

The spelling of 69884248890 in words is "sixty-nine billion, eight hundred eighty-four million, two hundred forty-eight thousand, eight hundred ninety".

Divisors: 1 2 3 5 6 10 15 17 30 34 51 85 102 170 255 289 510 578 867 1445 1734 1979 2890 3958 4073 4335 5937 8146 8670 9895 11874 12219 19790 20365 24438 29685 33643 40730 59370 61095 67286 69241 100929 122190 138482 168215 201858 207723 336430 346205 415446 504645 571931 692410 1009290 1038615 1143862 1177097 1715793 2077230 2354194 2859655 3431586 3531291 5719310 5885485 7062582 8060467 8578965 11770970 16120934 17157930 17656455 24181401 35312910 40302335 48362802 80604670 120907005 137027939 241814010 274055878 411083817 685139695 822167634 1370279390 2055419085 2329474963 4110838170 4658949926 6988424889 11647374815 13976849778 23294749630 34942124445 69884248890