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30260705 = 512174973
BaseRepresentation
bin111001101101…
…1110111100001
32002221101212212
41303123313201
530221320310
63000331505
7515132426
oct163336741
962841785
1030260705
1116099352
12a173b95
136366857
144039d4d
1529cb205
hex1cdbde1

30260705 has 8 divisors (see below), whose sum is σ = 36349992. Its totient is φ = 24183808.

The previous prime is 30260693. The next prime is 30260707. The reversal of 30260705 is 50706203.

It can be written as a sum of positive squares in 4 ways, for example, as 2876416 + 27384289 = 1696^2 + 5233^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30260705 - 212 = 30256609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30260707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3599 + ... + 8571.

It is an arithmetic number, because the mean of its divisors is an integer number (4543749).

Almost surely, 230260705 is an apocalyptic number.

It is an amenable number.

30260705 is a deficient number, since it is larger than the sum of its proper divisors (6089287).

30260705 is a wasteful number, since it uses less digits than its factorization.

30260705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6195.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 30260705 is about 5500.9730957350. The cubic root of 30260705 is about 311.6207347768.

Adding to 30260705 its reverse (50706203), we get a palindrome (80966908).

The spelling of 30260705 in words is "thirty million, two hundred sixty thousand, seven hundred five".

Divisors: 1 5 1217 4973 6085 24865 6052141 30260705