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30104 = 235371

30104 has 16 divisors (see below), whose sum is σ = 58320. Its totient is φ = 14560.

The previous prime is 30103. The next prime is 30109. The reversal of 30104 is 40103.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 30091 and 30100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389 + ... + 459.

It is an arithmetic number, because the mean of its divisors is an integer number (3645).

230104 is an apocalyptic number.

It is an amenable number.

30104 is a deficient number, since it is larger than the sum of its proper divisors (28216).

30104 is a wasteful number, since it uses less digits than its factorization.

30104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 30104 is about 173.5050431544. The cubic root of 30104 is about 31.1081894460.

Adding to 30104 its reverse (40103), we get a palindrome (70207).

Subtracting 30104 from its reverse (40103), we obtain a palindrome (9999).

The spelling of 30104 in words is "thirty thousand, one hundred four".

Divisors: 1 2 4 8 53 71 106 142 212 284 424 568 3763 7526 15052 30104