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230239890 = 232523111227
BaseRepresentation
bin11011011100100…
…10111010010010
3121001020101202100
431232102322102
5432420134030
634502501230
75464002216
oct1556227222
9531211670
10230239890
11108a67701
1265134816
133891452a
1422814946
151532e360
hexdb92e92

230239890 has 48 divisors (see below), whose sum is σ = 624656448. Its totient is φ = 58727328.

The previous prime is 230239861. The next prime is 230239901. The reversal of 230239890 is 98932032.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53544 + ... + 57683.

It is an arithmetic number, because the mean of its divisors is an integer number (13013676).

Almost surely, 2230239890 is an apocalyptic number.

230239890 is an abundant number, since it is smaller than the sum of its proper divisors (394416558).

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

230239890 is a wasteful number, since it uses less digits than its factorization.

230239890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111263 (or 111260 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 230239890 is about 15173.6577660101. The cubic root of 230239890 is about 612.9055062909.

The spelling of 230239890 in words is "two hundred thirty million, two hundred thirty-nine thousand, eight hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 23 30 45 46 69 90 115 138 207 230 345 414 690 1035 2070 111227 222454 333681 556135 667362 1001043 1112270 1668405 2002086 2558221 3336810 5005215 5116442 7674663 10010430 12791105 15349326 23023989 25582210 38373315 46047978 76746630 115119945 230239890