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30030245 = 5717411231
BaseRepresentation
bin111001010001…
…1100110100101
32002111200202022
41302203212211
530141431440
62551352525
7513152510
oct162434645
962450668
1030030245
1115a51193
12a082745
1362b599b
143db9d77
152982cb5
hex1ca39a5

30030245 has 32 divisors (see below), whose sum is σ = 44706816. Its totient is φ = 18892800.

The previous prime is 30030181. The next prime is 30030269. The reversal of 30030245 is 54203003.

It is not a de Polignac number, because 30030245 - 26 = 30030181 is a prime.

It is a super-2 number, since 2×300302452 = 1803631229520050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 23780 + ... + 25010.

It is an arithmetic number, because the mean of its divisors is an integer number (1397088).

Almost surely, 230030245 is an apocalyptic number.

30030245 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30030245 is a deficient number, since it is larger than the sum of its proper divisors (14676571).

30030245 is a wasteful number, since it uses less digits than its factorization.

30030245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 30030245 is about 5479.9858576460. The cubic root of 30030245 is about 310.8276357986.

Adding to 30030245 its reverse (54203003), we get a palindrome (84233248).

The spelling of 30030245 in words is "thirty million, thirty thousand, two hundred forty-five".

Divisors: 1 5 7 17 35 41 85 119 205 287 595 697 1231 1435 3485 4879 6155 8617 20927 24395 43085 50471 104635 146489 252355 353297 732445 858007 1766485 4290035 6006049 30030245