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30315404 = 2272813853
BaseRepresentation
bin111001110100…
…1001110001100
32010001011220202
41303221032030
530230043104
63001433032
7515451050
oct163511614
963034822
1030315404
1116126459
12a19b778
136385712
144051c60
1529dc51e
hex1ce938c

30315404 has 24 divisors (see below), whose sum is σ = 60862368. Its totient is φ = 12942720.

The previous prime is 30315379. The next prime is 30315409. The reversal of 30315404 is 40451303.

It is a super-3 number, since 3×303154043 (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (30315409) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5942 + ... + 9794.

It is an arithmetic number, because the mean of its divisors is an integer number (2535932).

Almost surely, 230315404 is an apocalyptic number.

It is an amenable number.

30315404 is an abundant number, since it is smaller than the sum of its proper divisors (30546964).

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

30315404 is a wasteful number, since it uses less digits than its factorization.

30315404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145 (or 4143 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30315404 is about 5505.9426077648. The cubic root of 30315404 is about 311.8083827792.

Adding to 30315404 its reverse (40451303), we get a palindrome (70766707).

The spelling of 30315404 in words is "thirty million, three hundred fifteen thousand, four hundred four".

Divisors: 1 2 4 7 14 28 281 562 1124 1967 3853 3934 7706 7868 15412 26971 53942 107884 1082693 2165386 4330772 7578851 15157702 30315404