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30017085 = 3571272251
BaseRepresentation
bin111001010000…
…0011000111101
32002111000200220
41302200120331
530141021320
62551211553
7513066240
oct162403075
962430626
1030017085
1115a4230a
12a076bb9
1362ac9b7
143db5257
15297de40
hex1ca063d

30017085 has 32 divisors (see below), whose sum is σ = 55345152. Its totient is φ = 13608000.

The previous prime is 30017069. The next prime is 30017107. The reversal of 30017085 is 58071003.

It is not a de Polignac number, because 30017085 - 24 = 30017069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12210 + ... + 14460.

It is an arithmetic number, because the mean of its divisors is an integer number (1729536).

Almost surely, 230017085 is an apocalyptic number.

30017085 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30017085 is a deficient number, since it is larger than the sum of its proper divisors (25328067).

30017085 is a wasteful number, since it uses less digits than its factorization.

30017085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 30017085 is about 5478.7849930436. The cubic root of 30017085 is about 310.7822250319.

Adding to 30017085 its reverse (58071003), we get a palindrome (88088088).

The spelling of 30017085 in words is "thirty million, seventeen thousand, eighty-five".

Divisors: 1 3 5 7 15 21 35 105 127 381 635 889 1905 2251 2667 4445 6753 11255 13335 15757 33765 47271 78785 236355 285877 857631 1429385 2001139 4288155 6003417 10005695 30017085