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30053005 = 573137601
BaseRepresentation
bin111001010100…
…1001010001101
32002112211222021
41302221022031
530143144010
62552050141
7513306043
oct162511215
962484867
1030053005
1115a672a4
12a093951
1362c3158
143dc4393
1529898da
hex1ca928d

30053005 has 16 divisors (see below), whose sum is σ = 36885744. Its totient is φ = 23500800.

The previous prime is 30052999. The next prime is 30053017. The reversal of 30053005 is 50035003.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1119364 + 28933641 = 1058^2 + 5379^2 .

It is not a de Polignac number, because 30053005 - 29 = 30052493 is a prime.

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 30053005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49705 + ... + 50305.

It is an arithmetic number, because the mean of its divisors is an integer number (2305359).

Almost surely, 230053005 is an apocalyptic number.

It is an amenable number.

30053005 is a deficient number, since it is larger than the sum of its proper divisors (6832739).

30053005 is a wasteful number, since it uses less digits than its factorization.

30053005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816.

The product of its (nonzero) digits is 225, while the sum is 16.

The square root of 30053005 is about 5482.0621120159. The cubic root of 30053005 is about 310.9061416572.

Adding to 30053005 its reverse (50035003), we get a palindrome (80088008).

The spelling of 30053005 in words is "thirty million, fifty-three thousand, five".

Divisors: 1 5 73 137 365 601 685 3005 10001 43873 50005 82337 219365 411685 6010601 30053005