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30260929 = 31231489
BaseRepresentation
bin111001101101…
…1111011000001
32002221102012011
41303123323001
530221322204
63000332521
7515133166
oct163337301
962842164
1030260929
1116099536
12a174141
13636699a
14403a06d
1529cb304
hex1cdbec1

30260929 has 6 divisors (see below), whose sum is σ = 31269570. Its totient is φ = 29283840.

The previous prime is 30260927. The next prime is 30260953. The reversal of 30260929 is 92906203.

It can be written as a sum of positive squares in only one way, i.e., 26801329 + 3459600 = 5177^2 + 1860^2 .

It is not a de Polignac number, because 30260929 - 21 = 30260927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30260929.

It is not an unprimeable number, because it can be changed into a prime (30260921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14784 + ... + 16705.

It is an arithmetic number, because the mean of its divisors is an integer number (5211595).

Almost surely, 230260929 is an apocalyptic number.

It is an amenable number.

30260929 is a deficient number, since it is larger than the sum of its proper divisors (1008641).

30260929 is an equidigital number, since it uses as much as digits as its factorization.

30260929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31551 (or 31520 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 30260929 is about 5500.9934557314. The cubic root of 30260929 is about 311.6215036824.

The spelling of 30260929 in words is "thirty million, two hundred sixty thousand, nine hundred twenty-nine".

Divisors: 1 31 961 31489 976159 30260929