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30063620 = 2251503181
BaseRepresentation
bin111001010101…
…1110000000100
32002120101112102
41302223300010
530144013440
62552211232
7513352016
oct162536004
962511472
1030063620
1115a74274
12a099b18
1362c7c32
143dc81b6
15298cb15
hex1cabc04

30063620 has 12 divisors (see below), whose sum is σ = 63133644. Its totient is φ = 12025440.

The previous prime is 30063613. The next prime is 30063629. The reversal of 30063620 is 2636003.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5541316 + 24522304 = 2354^2 + 4952^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1503181 = 30063620 / (3 + 0 + 0 + 6 + 3 + 6 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 30063592 and 30063601.

It is not an unprimeable number, because it can be changed into a prime (30063629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751571 + ... + 751610.

It is an arithmetic number, because the mean of its divisors is an integer number (5261137).

Almost surely, 230063620 is an apocalyptic number.

It is an amenable number.

30063620 is an abundant number, since it is smaller than the sum of its proper divisors (33070024).

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

30063620 is a wasteful number, since it uses less digits than its factorization.

30063620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503190 (or 1503188 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 30063620 is about 5483.0301841226. The cubic root of 30063620 is about 310.9427423255.

Adding to 30063620 its reverse (2636003), we get a palindrome (32699623).

The spelling of 30063620 in words is "thirty million, sixty-three thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 1503181 3006362 6012724 7515905 15031810 30063620