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258227420 = 225118391399
BaseRepresentation
bin11110110010000…
…11110011011100
3122222220022102112
433121003303130
51012101234140
641342413152
76253616423
oct1731036334
9588808375
10258227420
111228430a0
12725911b8
13416634b9
142641c2ba
1517a0bc65
hexf643cdc

258227420 has 48 divisors (see below), whose sum is σ = 592704000. Its totient is φ = 93721920.

The previous prime is 258227419. The next prime is 258227441. The reversal of 258227420 is 24722852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183881 + ... + 185279.

It is an arithmetic number, because the mean of its divisors is an integer number (12348000).

Almost surely, 2258227420 is an apocalyptic number.

258227420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258227420 is an abundant number, since it is smaller than the sum of its proper divisors (334476580).

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

258227420 is a wasteful number, since it uses less digits than its factorization.

258227420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258 (or 2256 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 258227420 is about 16069.4561202301. The cubic root of 258227420 is about 636.7966724940.

The spelling of 258227420 in words is "two hundred fifty-eight million, two hundred twenty-seven thousand, four hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 839 1399 1678 2798 3356 4195 5596 6995 8390 9229 13990 15389 16780 18458 27980 30778 36916 46145 61556 76945 92290 153890 184580 307780 1173761 2347522 4695044 5868805 11737610 12911371 23475220 25822742 51645484 64556855 129113710 258227420