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305030807 = 19231016911
BaseRepresentation
bin10010001011100…
…110011010010111
3210020222011121022
4102023212122113
51111041441212
650133511355
710362501434
oct2213463227
9706864538
10305030807
11147200184
12861a255b
134b26c903
142c722b8b
151bba4772
hex122e6697

305030807 has 16 divisors (see below), whose sum is σ = 338411520. Its totient is φ = 273636000.

The previous prime is 305030797. The next prime is 305030827. The reversal of 305030807 is 708030503.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-305030807 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 (305030827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40682 + ... + 47592.

It is an arithmetic number, because the mean of its divisors is an integer number (21150720).

Almost surely, 2305030807 is an apocalyptic number.

305030807 is a deficient number, since it is larger than the sum of its proper divisors (33380713).

305030807 is a wasteful number, since it uses less digits than its factorization.

305030807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7054.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 305030807 is about 17465.1311761464. The cubic root of 305030807 is about 673.1542125303.

The spelling of 305030807 in words is "three hundred five million, thirty thousand, eight hundred seven".

Divisors: 1 19 23 101 437 1919 2323 6911 44137 131309 158953 698011 3020107 13262209 16054253 305030807