Search a number
-
+
315247254 = 23727127697
BaseRepresentation
bin10010110010100…
…100101010010110
3210222012012221020
4102302210222112
51121200403004
651140502010
710545362130
oct2262445226
9728165836
10315247254
11151a48a23
12896aa906
1350408b4a
142dc22050
151ca218d9
hex12ca4a96

315247254 has 32 divisors (see below), whose sum is σ = 723250176. Its totient is φ = 89735040.

The previous prime is 315247253. The next prime is 315247301. The reversal of 315247254 is 452742513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315247253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2467 + ... + 25230.

It is an arithmetic number, because the mean of its divisors is an integer number (22601568).

Almost surely, 2315247254 is an apocalyptic number.

315247254 is an abundant number, since it is smaller than the sum of its proper divisors (408002922).

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

315247254 is a wasteful number, since it uses less digits than its factorization.

315247254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27980.

The product of its digits is 33600, while the sum is 33.

The square root of 315247254 is about 17755.2035752903. The cubic root of 315247254 is about 680.5871903265.

Adding to 315247254 its reverse (452742513), we get a palindrome (767989767).

The spelling of 315247254 in words is "three hundred fifteen million, two hundred forty-seven thousand, two hundred fifty-four".

Divisors: 1 2 3 6 7 14 21 42 271 542 813 1626 1897 3794 5691 11382 27697 55394 83091 166182 193879 387758 581637 1163274 7505887 15011774 22517661 45035322 52541209 105082418 157623627 315247254