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30650020 = 2252635827
BaseRepresentation
bin111010011101…
…0111010100100
32010200011220221
41310322322210
530321300040
63012534124
7521343442
oct164727244
963604827
1030650020
11163348a5
12a321344
136471b0b
1440dbb92
152a5674a
hex1d3aea4

30650020 has 24 divisors (see below), whose sum is σ = 64620864. Its totient is φ = 12211296.

The previous prime is 30650017. The next prime is 30650027. The reversal of 30650020 is 2005603.

It is a junction number, because it is equal to n+sod(n) for n = 30649976 and 30650003.

It is not an unprimeable number, because it can be changed into a prime (30650027) 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, 2347 + ... + 8173.

It is an arithmetic number, because the mean of its divisors is an integer number (2692536).

Almost surely, 230650020 is an apocalyptic number.

It is an amenable number.

30650020 is an abundant number, since it is smaller than the sum of its proper divisors (33970844).

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

30650020 is a wasteful number, since it uses less digits than its factorization.

30650020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6099 (or 6097 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 30650020 is about 5536.2460205450. The cubic root of 30650020 is about 312.9514158686.

Adding to 30650020 its reverse (2005603), we get a palindrome (32655623).

The spelling of 30650020 in words is "thirty million, six hundred fifty thousand, twenty".

Divisors: 1 2 4 5 10 20 263 526 1052 1315 2630 5260 5827 11654 23308 29135 58270 116540 1532501 3065002 6130004 7662505 15325010 30650020