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30250083 = 323617187
BaseRepresentation
bin111001101100…
…1010001100011
32002220212022110
41303121101203
530221000313
63000210403
7515056443
oct163312143
962825273
1030250083
1116091376
12a169a03
136361a76
144036123
1529c7ec3
hex1cd9463

30250083 has 16 divisors (see below), whose sum is σ = 42782976. Its totient is φ = 18971040.

The previous prime is 30250081. The next prime is 30250111. The reversal of 30250083 is 38005203.

It is not a de Polignac number, because 30250083 - 21 = 30250081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30250081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616 + ... + 7802.

It is an arithmetic number, because the mean of its divisors is an integer number (2673936).

Almost surely, 230250083 is an apocalyptic number.

30250083 is a deficient number, since it is larger than the sum of its proper divisors (12532893).

30250083 is a wasteful number, since it uses less digits than its factorization.

30250083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7274.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 30250083 is about 5500.0075454494. The cubic root of 30250083 is about 311.5842691931.

Adding to 30250083 its reverse (38005203), we get a palindrome (68255286).

The spelling of 30250083 in words is "thirty million, two hundred fifty thousand, eighty-three".

Divisors: 1 3 23 61 69 183 1403 4209 7187 21561 165301 438407 495903 1315221 10083361 30250083