Search a number
247131074 = 2177268561
BaseRepresentation
bin11101011101011…
…10101111000010
3122020000120002202
432232232233002
51001231143244
640304513202
76060402521
oct1656565702
9566016082
10247131074
11117554263
126a91b802
133c279908
1424b704b8
1516a6904e
hexebaebc2

247131074 has 8 divisors (see below), whose sum is σ = 392502348. Its totient is φ = 116296960.

The previous prime is 247131037. The next prime is 247131077. The reversal of 247131074 is 470131742.

It can be written as a sum of positive squares in 2 ways, for example, as 226291849 + 20839225 = 15043^2 + 4565^2 .

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

It is a super-2 number, since 2×2471310742 = 122147535472786952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247131077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3634247 + ... + 3634314.

Almost surely, 2247131074 is an apocalyptic number.

247131074 is a deficient number, since it is larger than the sum of its proper divisors (145371274).

247131074 is a wasteful number, since it uses less digits than its factorization.

247131074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7268580.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 247131074 is about 15720.4031118798. The cubic root of 247131074 is about 627.5415010408.

The spelling of 247131074 in words is "two hundred forty-seven million, one hundred thirty-one thousand, seventy-four".