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255312430 = 25238910687
BaseRepresentation
bin11110011011111…
…00001000101110
3122210102012210221
433031330020232
51010324444210
641200121554
76220056052
oct1715741056
9583365727
10255312430
1112113200a
12716062ba
1340b82759
1425c9dc62
15176331da
hexf37c22e

255312430 has 16 divisors (see below), whose sum is σ = 459797760. Its totient is φ = 102072672.

The previous prime is 255312419. The next prime is 255312493. The reversal of 255312430 is 34213552.

It is a junction number, because it is equal to n+sod(n) for n = 255312395 and 255312404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18547 + ... + 29233.

It is an arithmetic number, because the mean of its divisors is an integer number (28737360).

Almost surely, 2255312430 is an apocalyptic number.

255312430 is a deficient number, since it is larger than the sum of its proper divisors (204485330).

255312430 is a wasteful number, since it uses less digits than its factorization.

255312430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13083.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 255312430 is about 15978.4989908314. The cubic root of 255312430 is about 634.3914478979.

Adding to 255312430 its reverse (34213552), we get a palindrome (289525982).

The spelling of 255312430 in words is "two hundred fifty-five million, three hundred twelve thousand, four hundred thirty".

Divisors: 1 2 5 10 2389 4778 10687 11945 21374 23890 53435 106870 25531243 51062486 127656215 255312430