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30353425 = 521214137
BaseRepresentation
bin111001111001…
…0100000010001
32010010010001221
41303302200101
530232302200
63002325041
7515666644
oct163624021
963103057
1030353425
1116151a83
12a1b9781
136399b0b
144061a5b
1529e891a
hex1cf2811

30353425 has 6 divisors (see below), whose sum is σ = 37638278. Its totient is φ = 24282720.

The previous prime is 30353413. The next prime is 30353437. The reversal of 30353425 is 52435303.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30353413) and next prime (30353437).

It can be written as a sum of positive squares in 3 ways, for example, as 9778129 + 20575296 = 3127^2 + 4536^2 .

It is not a de Polignac number, because 30353425 - 215 = 30320657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1214137 = 30353425 / (3 + 0 + 3 + 5 + 3 + 4 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30353425.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 607044 + ... + 607093.

Almost surely, 230353425 is an apocalyptic number.

It is an amenable number.

30353425 is a deficient number, since it is larger than the sum of its proper divisors (7284853).

30353425 is a wasteful number, since it uses less digits than its factorization.

30353425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214147 (or 1214142 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 30353425 is about 5509.3942498246. The cubic root of 30353425 is about 311.9386830248.

Adding to 30353425 its reverse (52435303), we get a palindrome (82788728).

The spelling of 30353425 in words is "thirty million, three hundred fifty-three thousand, four hundred twenty-five".

Divisors: 1 5 25 1214137 6070685 30353425