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305030423 = 4753122453
BaseRepresentation
bin10010001011100…
…110010100010111
3210020222011002002
4102023212110113
51111041433143
650133505515
710362500345
oct2213462427
9706864062
10305030423
111471aa965
12861a229b
134b26c699
142c722995
151bba45b8
hex122e6517

305030423 has 8 divisors (see below), whose sum is σ = 317400768. Its totient is φ = 292905184.

The previous prime is 305030399. The next prime is 305030437. The reversal of 305030423 is 324030503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 305030423 - 212 = 305026327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 305030395 and 305030404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305030443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58736 + ... + 63717.

It is an arithmetic number, because the mean of its divisors is an integer number (39675096).

Almost surely, 2305030423 is an apocalyptic number.

305030423 is a deficient number, since it is larger than the sum of its proper divisors (12370345).

305030423 is a wasteful number, since it uses less digits than its factorization.

305030423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122553.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 305030423 is about 17465.1201828101. The cubic root of 305030423 is about 673.1539300547.

Adding to 305030423 its reverse (324030503), we get a palindrome (629060926).

The spelling of 305030423 in words is "three hundred five million, thirty thousand, four hundred twenty-three".

Divisors: 1 47 53 2491 122453 5755291 6490009 305030423