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230216455 = 573241557
BaseRepresentation
bin11011011100011…
…01001100000111
3121001012012121101
431232031030013
5432413411310
634502200531
75463544000
oct1556151407
9531165541
10230216455
11108a51037
1265123147
1338906971
142280a1a7
151532743a
hexdb8d307

230216455 has 32 divisors (see below), whose sum is σ = 324086400. Its totient is φ = 156925440.

The previous prime is 230216443. The next prime is 230216461. The reversal of 230216455 is 554612032.

It is not a de Polignac number, because 230216455 - 25 = 230216423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 413037 + ... + 413593.

It is an arithmetic number, because the mean of its divisors is an integer number (10127700).

Almost surely, 2230216455 is an apocalyptic number.

230216455 is a deficient number, since it is larger than the sum of its proper divisors (93869945).

230216455 is an equidigital number, since it uses as much as digits as its factorization.

230216455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 230216455 is about 15172.8855199003. The cubic root of 230216455 is about 612.8847106939.

Adding to 230216455 its reverse (554612032), we get a palindrome (784828487).

The spelling of 230216455 in words is "two hundred thirty million, two hundred sixteen thousand, four hundred fifty-five".

Divisors: 1 5 7 35 49 241 245 343 557 1205 1687 1715 2785 3899 8435 11809 19495 27293 59045 82663 134237 136465 191051 413315 671185 939659 955255 4698295 6577613 32888065 46043291 230216455