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228710472 = 23329615387
BaseRepresentation
bin11011010000111…
…01100001001000
3120221100200210020
431220131201020
5432022213342
634410020440
75445002244
oct1550354110
9527320706
10228710472
11108112621
1264717720
13384ca353
1422537424
151512b0ec
hexda1d848

228710472 has 64 divisors (see below), whose sum is σ = 601300800. Its totient is φ = 72387840.

The previous prime is 228710453. The next prime is 228710473. The reversal of 228710472 is 274017822.

It is not an unprimeable number, because it can be changed into a prime (228710473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39763 + ... + 45149.

It is an arithmetic number, because the mean of its divisors is an integer number (9395325).

Almost surely, 2228710472 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 228710472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300650400).

228710472 is an abundant number, since it is smaller than the sum of its proper divisors (372590328).

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

228710472 is a wasteful number, since it uses less digits than its factorization.

228710472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5486 (or 5482 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 228710472 is about 15123.1766504263. The cubic root of 228710472 is about 611.5453712747.

The spelling of 228710472 in words is "two hundred twenty-eight million, seven hundred ten thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 24 29 58 61 87 116 122 174 183 232 244 348 366 488 696 732 1464 1769 3538 5307 5387 7076 10614 10774 14152 16161 21228 21548 32322 42456 43096 64644 129288 156223 312446 328607 468669 624892 657214 937338 985821 1249784 1314428 1874676 1971642 2628856 3749352 3943284 7886568 9529603 19059206 28588809 38118412 57177618 76236824 114355236 228710472