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30320424 = 23323731129
BaseRepresentation
bin111001110101…
…0011100101000
32010001102210200
41303222130220
530230223144
63001512200
7515501511
oct163523450
963042720
1030320424
111612a202
12a1a2660
136387aa4
144053a08
1529ddc69
hex1cea728

30320424 has 48 divisors (see below), whose sum is σ = 82410900. Its totient is φ = 10070784.

The previous prime is 30320393. The next prime is 30320453. The reversal of 30320424 is 42402303.

It can be written as a sum of positive squares in 2 ways, for example, as 28836900 + 1483524 = 5370^2 + 1218^2 .

It is a super-2 number, since 2×303204242 = 1838656223079552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30320397 and 30320406.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 26292 + ... + 27420.

Almost surely, 230320424 is an apocalyptic number.

It is an amenable number.

30320424 is an abundant number, since it is smaller than the sum of its proper divisors (52090476).

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

30320424 is a wasteful number, since it uses less digits than its factorization.

30320424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514 (or 1507 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 30320424 is about 5506.3984599736. The cubic root of 30320424 is about 311.8255928604.

Adding to 30320424 its reverse (42402303), we get a palindrome (72722727).

The spelling of 30320424 in words is "thirty million, three hundred twenty thousand, four hundred twenty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 373 746 1119 1129 1492 2238 2258 2984 3357 3387 4476 4516 6714 6774 8952 9032 10161 13428 13548 20322 26856 27096 40644 81288 421117 842234 1263351 1684468 2526702 3368936 3790053 5053404 7580106 10106808 15160212 30320424