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30324421 = 101929759
BaseRepresentation
bin111001110101…
…1011011000101
32010001122021201
41303223123011
530230340141
63001542501
7515516251
oct163533305
963048251
1030324421
1116132206
12a1a4a31
13638985a
144055261
1529e0031
hex1ceb6c5

30324421 has 4 divisors (see below), whose sum is σ = 30355200. Its totient is φ = 30293644.

The previous prime is 30324403. The next prime is 30324433. The reversal of 30324421 is 12442303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12442303 = 14298707.

It is a cyclic number.

It is not a de Polignac number, because 30324421 - 25 = 30324389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30324451) 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, 13861 + ... + 15898.

It is an arithmetic number, because the mean of its divisors is an integer number (7588800).

Almost surely, 230324421 is an apocalyptic number.

It is an amenable number.

30324421 is a deficient number, since it is larger than the sum of its proper divisors (30779).

30324421 is a wasteful number, since it uses less digits than its factorization.

30324421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30778.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 30324421 is about 5506.7613894194. The cubic root of 30324421 is about 311.8392944292.

Adding to 30324421 its reverse (12442303), we get a palindrome (42766724).

The spelling of 30324421 in words is "thirty million, three hundred twenty-four thousand, four hundred twenty-one".

Divisors: 1 1019 29759 30324421