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30201828 = 22310124919
BaseRepresentation
bin111001100110…
…1011111100100
32002211102010020
41303031133210
530212424303
62555155140
7514465656
oct163153744
962742106
1030201828
1116059098
12a145ab0
136345b07
1440226d6
1529b8a53
hex1ccd7e4

30201828 has 24 divisors (see below), whose sum is σ = 71171520. Its totient is φ = 9967200.

The previous prime is 30201827. The next prime is 30201833. The reversal of 30201828 is 82810203.

It is a junction number, because it is equal to n+sod(n) for n = 30201798 and 30201807.

It is not an unprimeable number, because it can be changed into a prime (30201827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11248 + ... + 13671.

It is an arithmetic number, because the mean of its divisors is an integer number (2965480).

Almost surely, 230201828 is an apocalyptic number.

It is an amenable number.

30201828 is an abundant number, since it is smaller than the sum of its proper divisors (40969692).

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

30201828 is a wasteful number, since it uses less digits than its factorization.

30201828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25027 (or 25025 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 30201828 is about 5495.6189824259. The cubic root of 30201828 is about 311.4185010431.

The spelling of 30201828 in words is "thirty million, two hundred one thousand, eight hundred twenty-eight".

Divisors: 1 2 3 4 6 12 101 202 303 404 606 1212 24919 49838 74757 99676 149514 299028 2516819 5033638 7550457 10067276 15100914 30201828