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30016161 = 3271313637
BaseRepresentation
bin111001010000…
…0001010100001
32002110222102200
41302200022201
530141004121
62551203413
7513063450
oct162401241
962428380
1030016161
1115a4164a
12a076569
1362ac456
143db4b97
15297da26
hex1ca02a1

30016161 has 24 divisors (see below), whose sum is σ = 49942464. Its totient is φ = 17016480.

The previous prime is 30016159. The next prime is 30016177. The reversal of 30016161 is 16161003.

It is not a de Polignac number, because 30016161 - 21 = 30016159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30016111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6435 + ... + 10071.

It is an arithmetic number, because the mean of its divisors is an integer number (2080936).

Almost surely, 230016161 is an apocalyptic number.

It is an amenable number.

30016161 is a deficient number, since it is larger than the sum of its proper divisors (19926303).

30016161 is a wasteful number, since it uses less digits than its factorization.

30016161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3781 (or 3778 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 30016161 is about 5478.7006671290. The cubic root of 30016161 is about 310.7790361177.

Adding to 30016161 its reverse (16161003), we get a palindrome (46177164).

It can be divided in two parts, 300 and 16161, that added together give a palindrome (16461).

The spelling of 30016161 in words is "thirty million, sixteen thousand, one hundred sixty-one".

Divisors: 1 3 7 9 21 63 131 393 917 1179 2751 3637 8253 10911 25459 32733 76377 229131 476447 1429341 3335129 4288023 10005387 30016161