Search a number
-
+
30240413 = 74320059
BaseRepresentation
bin111001101011…
…0111010011101
32002220101001022
41303112322131
530220143123
63000053525
7515016320
oct163267235
962811038
1030240413
1116085085
12a1642a5
13635a548
1440327b7
1529c51c8
hex1cd6e9d

30240413 has 4 divisors (see below), whose sum is σ = 34560480. Its totient is φ = 25920348.

The previous prime is 30240401. The next prime is 30240437. The reversal of 30240413 is 31404203.

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: 31404203 = 61514823.

It is a cyclic number.

It is not a de Polignac number, because 30240413 - 26 = 30240349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30240391 and 30240400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30240443) 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, 2160023 + ... + 2160036.

It is an arithmetic number, because the mean of its divisors is an integer number (8640120).

Almost surely, 230240413 is an apocalyptic number.

It is an amenable number.

30240413 is a deficient number, since it is larger than the sum of its proper divisors (4320067).

30240413 is an equidigital number, since it uses as much as digits as its factorization.

30240413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4320066.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30240413 is about 5499.1283854807. The cubic root of 30240413 is about 311.5510644248.

Adding to 30240413 its reverse (31404203), we get a palindrome (61644616).

The spelling of 30240413 in words is "thirty million, two hundred forty thousand, four hundred thirteen".

Divisors: 1 7 4320059 30240413