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115210428 = 223172139239
BaseRepresentation
bin1101101110111…
…11100010111100
322000210021222220
412313133202330
5213443213203
615233205340
72566162314
oct667374274
9260707886
10115210428
115a040333
1232700850
131ab3ab68
1411430444
15a1ab653
hex6ddf8bc

115210428 has 72 divisors (see below), whose sum is σ = 288825600. Its totient is φ = 35734272.

The previous prime is 115210379. The next prime is 115210429. The reversal of 115210428 is 824012511.

It is a junction number, because it is equal to n+sod(n) for n = 115210398 and 115210407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115210429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 481933 + ... + 482171.

Almost surely, 2115210428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115210428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144412800).

115210428 is an abundant number, since it is smaller than the sum of its proper divisors (173615172).

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

115210428 is a wasteful number, since it uses less digits than its factorization.

115210428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 115210428 is about 10733.6120667742. The cubic root of 115210428 is about 486.5908409627.

Adding to 115210428 its reverse (824012511), we get a palindrome (939222939).

The spelling of 115210428 in words is "one hundred fifteen million, two hundred ten thousand, four hundred twenty-eight".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 139 204 239 278 289 417 478 556 578 717 834 867 956 1156 1434 1668 1734 2363 2868 3468 4063 4726 7089 8126 9452 12189 14178 16252 24378 28356 33221 40171 48756 66442 69071 80342 99663 120513 132884 138142 160684 199326 207213 241026 276284 398652 414426 482052 564757 828852 1129514 1694271 2259028 3388542 6777084 9600869 19201738 28802607 38403476 57605214 115210428