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69506980 = 2253475349
BaseRepresentation
bin1000010010010…
…01011110100100
311211210022122121
410021021132210
5120243210410
610521435324
71502541154
oct411113644
9154708577
1069506980
1136264694
121b33bb44
13115282ba
149334764
15617e9da
hex42497a4

69506980 has 12 divisors (see below), whose sum is σ = 145964700. Its totient is φ = 27802784.

The previous prime is 69506977. The next prime is 69506981. The reversal of 69506980 is 8960596.

It can be written as a sum of positive squares in 2 ways, for example, as 31091776 + 38415204 = 5576^2 + 6198^2 .

It is not an unprimeable number, because it can be changed into a prime (69506981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1737655 + ... + 1737694.

It is an arithmetic number, because the mean of its divisors is an integer number (12163725).

Almost surely, 269506980 is an apocalyptic number.

It is an amenable number.

69506980 is an abundant number, since it is smaller than the sum of its proper divisors (76457720).

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

69506980 is a wasteful number, since it uses less digits than its factorization.

69506980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475358 (or 3475356 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 69506980 is about 8337.0846223365. The cubic root of 69506980 is about 411.1586894587.

The spelling of 69506980 in words is "sixty-nine million, five hundred six thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 3475349 6950698 13901396 17376745 34753490 69506980