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30101260 = 22572111019
BaseRepresentation
bin111001011010…
…0111100001100
32002122022011111
41302310330030
530201220020
62553101404
7513566530
oct162647414
962568144
1030101260
1115a9a582
12a0b7864
13630c0c7
143dd7bc0
152998d5a
hex1cb4f0c

30101260 has 48 divisors (see below), whose sum is σ = 72656640. Its totient is φ = 10261440.

The previous prime is 30101251. The next prime is 30101261. The reversal of 30101260 is 6210103.

It is a self number, because there is not a number n which added to its sum of digits gives 30101260.

It is not an unprimeable number, because it can be changed into a prime (30101261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29031 + ... + 30049.

It is an arithmetic number, because the mean of its divisors is an integer number (1513680).

Almost surely, 230101260 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 30101260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36328320).

30101260 is an abundant number, since it is smaller than the sum of its proper divisors (42555380).

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

30101260 is a wasteful number, since it uses less digits than its factorization.

30101260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 30101260 is about 5486.4615190485. The cubic root of 30101260 is about 311.0724561762.

Adding to 30101260 its reverse (6210103), we get a palindrome (36311363).

The spelling of 30101260 in words is "thirty million, one hundred one thousand, two hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 211 422 844 1019 1055 1477 2038 2110 2954 4076 4220 5095 5908 7133 7385 10190 14266 14770 20380 28532 29540 35665 71330 142660 215009 430018 860036 1075045 1505063 2150090 3010126 4300180 6020252 7525315 15050630 30101260