Search a number
-
+
69495040 = 28554293
BaseRepresentation
bin1000010010001…
…10100100000000
311211202201021101
410021012210000
5120242320130
610521304144
71502461306
oct411064400
9154681241
1069495040
113625671a
121b335054
1311522a34
149330276
15617b1ca
hex4246900

69495040 has 36 divisors (see below), whose sum is σ = 166465404. Its totient is φ = 27797504.

The previous prime is 69495011. The next prime is 69495053. The reversal of 69495040 is 4059496.

It can be written as a sum of positive squares in 2 ways, for example, as 55115776 + 14379264 = 7424^2 + 3792^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25867 + ... + 28426.

It is an arithmetic number, because the mean of its divisors is an integer number (4624039).

Almost surely, 269495040 is an apocalyptic number.

It is an amenable number.

69495040 is an abundant number, since it is smaller than the sum of its proper divisors (96970364).

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

69495040 is an equidigital number, since it uses as much as digits as its factorization.

69495040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54314 (or 54300 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 69495040 is about 8336.3685139274. The cubic root of 69495040 is about 411.1351449846.

The spelling of 69495040 in words is "sixty-nine million, four hundred ninety-five thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 640 1280 54293 108586 217172 271465 434344 542930 868688 1085860 1737376 2171720 3474752 4343440 6949504 8686880 13899008 17373760 34747520 69495040