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30216260 = 2252959883
BaseRepresentation
bin111001101000…
…1000001000100
32002212010220202
41303101001010
530213410020
62555350032
7514556024
oct163210104
962763822
1030216260
1116068a18
12a152318
13634c559
144027a84
1529bce75
hex1cd1044

30216260 has 48 divisors (see below), whose sum is σ = 66830400. Its totient is φ = 11458944.

The previous prime is 30216257. The next prime is 30216281. The reversal of 30216260 is 6261203.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 33779 + ... + 34661.

It is an arithmetic number, because the mean of its divisors is an integer number (1392300).

Almost surely, 230216260 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 30216260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33415200).

30216260 is an abundant number, since it is smaller than the sum of its proper divisors (36614140).

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

30216260 is a wasteful number, since it uses less digits than its factorization.

30216260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30216260 is about 5496.9318715080. The cubic root of 30216260 is about 311.4680971151.

Adding to 30216260 its reverse (6261203), we get a palindrome (36477463).

The spelling of 30216260 in words is "thirty million, two hundred sixteen thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 29 58 59 116 118 145 236 290 295 580 590 883 1180 1711 1766 3422 3532 4415 6844 8555 8830 17110 17660 25607 34220 51214 52097 102428 104194 128035 208388 256070 260485 512140 520970 1041940 1510813 3021626 6043252 7554065 15108130 30216260