Search a number
-
+
274257281 = 6128315887
BaseRepresentation
bin10000010110001…
…101010110000001
3201010001201021002
4100112031112001
51030202213111
643114141345
76540101624
oct2026152601
9633051232
10274257281
111308a1611
1277a21855
1344a8681c
14285d1dbb
151912663b
hex1058d581

274257281 has 8 divisors (see below), whose sum is σ = 279755904. Its totient is φ = 268791120.

The previous prime is 274257259. The next prime is 274257287. The reversal of 274257281 is 182752472.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-274257281 is a prime.

It is a super-2 number, since 2×2742572812 = 150434112363025922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (274257287) 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 7 ways as a sum of consecutive naturals, for example, 9320 + ... + 25206.

It is an arithmetic number, because the mean of its divisors is an integer number (34969488).

Almost surely, 2274257281 is an apocalyptic number.

It is an amenable number.

274257281 is a deficient number, since it is larger than the sum of its proper divisors (5498623).

274257281 is a wasteful number, since it uses less digits than its factorization.

274257281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16231.

The product of its digits is 62720, while the sum is 38.

The square root of 274257281 is about 16560.7149906035. The cubic root of 274257281 is about 649.7097568081.

The spelling of 274257281 in words is "two hundred seventy-four million, two hundred fifty-seven thousand, two hundred eighty-one".

Divisors: 1 61 283 15887 17263 969107 4496021 274257281