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257080074 = 23112937951
BaseRepresentation
bin11110101001010…
…11101100001010
3122220202000120020
433110223230022
51011303030244
641302041310
76241100406
oct1724535412
9586660506
10257080074
1112212a079
1272119236
13413511b4
1426200106
1517881d19
hexf52bb0a

257080074 has 16 divisors (see below), whose sum is σ = 514629120. Its totient is φ = 85615200.

The previous prime is 257080073. The next prime is 257080081. The reversal of 257080074 is 470080752.

It is not an unprimeable number, because it can be changed into a prime (257080073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12202 + ... + 25749.

It is an arithmetic number, because the mean of its divisors is an integer number (32164320).

Almost surely, 2257080074 is an apocalyptic number.

257080074 is an abundant number, since it is smaller than the sum of its proper divisors (257549046).

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

257080074 is a wasteful number, since it uses less digits than its factorization.

257080074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39085.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 257080074 is about 16033.7167868215. The cubic root of 257080074 is about 635.8521421643.

The spelling of 257080074 in words is "two hundred fifty-seven million, eighty thousand, seventy-four".

Divisors: 1 2 3 6 1129 2258 3387 6774 37951 75902 113853 227706 42846679 85693358 128540037 257080074