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128874973 = 1076411879
BaseRepresentation
bin1111010111001…
…11100111011101
322222111112020011
413223213213131
5230442444343
620442123221
73123263533
oct753474735
9288445204
10128874973
1166823747
12371b0511
13209136a6
141318a153
15b4aa29d
hex7ae79dd

128874973 has 8 divisors (see below), whose sum is σ = 130351680. Its totient is φ = 127403520.

The previous prime is 128874971. The next prime is 128874983. The reversal of 128874973 is 379478821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128874973 - 21 = 128874971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128874971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67648 + ... + 69526.

It is an arithmetic number, because the mean of its divisors is an integer number (16293960).

Almost surely, 2128874973 is an apocalyptic number.

It is an amenable number.

128874973 is a deficient number, since it is larger than the sum of its proper divisors (1476707).

128874973 is a wasteful number, since it uses less digits than its factorization.

128874973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627.

The product of its digits is 677376, while the sum is 49.

The square root of 128874973 is about 11352.3113505576. The cubic root of 128874973 is about 505.1141433977.

The spelling of 128874973 in words is "one hundred twenty-eight million, eight hundred seventy-four thousand, nine hundred seventy-three".

Divisors: 1 107 641 1879 68587 201053 1204439 128874973