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30208238250 = 235385946889
BaseRepresentation
bin11100001000100011…
…010010001010101010
32212222021010111112220
4130020203102022222
5443331302111000
621513311214510
72116405534311
oct341043221252
985867114486
1030208238250
11118a1843563
125a30817436
132b055750b8
141667d73278
15bbc05e1a0
hex7088d22aa

30208238250 has 64 divisors (see below), whose sum is σ = 75489148800. Its totient is φ = 8045980800.

The previous prime is 30208238219. The next prime is 30208238251. The reversal of 30208238250 is 5283280203.

It is not an unprimeable number, because it can be changed into a prime (30208238251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 620806 + ... + 667694.

It is an arithmetic number, because the mean of its divisors is an integer number (1179517950).

Almost surely, 230208238250 is an apocalyptic number.

30208238250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30208238250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37744574400).

30208238250 is an abundant number, since it is smaller than the sum of its proper divisors (45280910550).

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

30208238250 is a wasteful number, since it uses less digits than its factorization.

30208238250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47768 (or 47758 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 30208238250 in words is "thirty billion, two hundred eight million, two hundred thirty-eight thousand, two hundred fifty".

Divisors: 1 2 3 5 6 10 15 25 30 50 75 125 150 250 375 750 859 1718 2577 4295 5154 8590 12885 21475 25770 42950 46889 64425 93778 107375 128850 140667 214750 234445 281334 322125 468890 644250 703335 1172225 1406670 2344450 3516675 5861125 7033350 11722250 17583375 35166750 40277651 80555302 120832953 201388255 241665906 402776510 604164765 1006941275 1208329530 2013882550 3020823825 5034706375 6041647650 10069412750 15104119125 30208238250