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30160061 = 231311307
BaseRepresentation
bin111001100001…
…1010010111101
32002202021211022
41303003102331
530210110221
62554233525
7514233131
oct163032275
962667738
1030160061
111602a778
12a1258a5
13632cab9
1440113c1
1529ab4ab
hex1cc34bd

30160061 has 4 divisors (see below), whose sum is σ = 31471392. Its totient is φ = 28848732.

The previous prime is 30160027. The next prime is 30160063. The reversal of 30160061 is 16006103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30160061 - 222 = 25965757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30160063) 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, 655631 + ... + 655676.

It is an arithmetic number, because the mean of its divisors is an integer number (7867848).

Almost surely, 230160061 is an apocalyptic number.

30160061 is the 2936-th centered heptagonal number.

It is an amenable number.

30160061 is a deficient number, since it is larger than the sum of its proper divisors (1311331).

30160061 is a wasteful number, since it uses less digits than its factorization.

30160061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311330.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 30160061 is about 5491.8176408180. The cubic root of 30160061 is about 311.2748782015.

Adding to 30160061 its reverse (16006103), we get a palindrome (46166164).

The spelling of 30160061 in words is "thirty million, one hundred sixty thousand, sixty-one".

Divisors: 1 23 1311307 30160061