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30017672 = 2331121039
BaseRepresentation
bin111001010000…
…0100010001000
32002111001111122
41302200202020
530141031142
62551214412
7513101036
oct162404210
962431448
1030017672
1115a427a3
12a077408
1362b0049
143db5556
15297e1d2
hex1ca0888

30017672 has 16 divisors (see below), whose sum is σ = 58099200. Its totient is φ = 14524560.

The previous prime is 30017671. The next prime is 30017707. The reversal of 30017672 is 27671003.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (30017671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60272 + ... + 60767.

It is an arithmetic number, because the mean of its divisors is an integer number (3631200).

Almost surely, 230017672 is an apocalyptic number.

It is an amenable number.

30017672 is a deficient number, since it is larger than the sum of its proper divisors (28081528).

30017672 is a wasteful number, since it uses less digits than its factorization.

30017672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121076 (or 121072 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 30017672 is about 5478.8385630533. The cubic root of 30017672 is about 310.7842508557.

Adding to 30017672 its reverse (27671003), we get a palindrome (57688675).

The spelling of 30017672 in words is "thirty million, seventeen thousand, six hundred seventy-two".

Divisors: 1 2 4 8 31 62 124 248 121039 242078 484156 968312 3752209 7504418 15008836 30017672