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30406123 = 112995317
BaseRepresentation
bin111001111111…
…1010111101011
32010012210100201
41303333113223
530240443443
63003413031
7516306406
oct163772753
963183321
1030406123
1116188630
12a224177
1363b7ab7
144076d3d
152a0934d
hex1cff5eb

30406123 has 8 divisors (see below), whose sum is σ = 34314480. Its totient is φ = 26688480.

The previous prime is 30406097. The next prime is 30406127. The reversal of 30406123 is 32160403.

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 30406123 - 25 = 30406091 is a prime.

It is a super-2 number, since 2×304061232 = 1849064631782258, which contains 22 as substring.

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 30406123.

It is not an unprimeable number, because it can be changed into a prime (30406127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47340 + ... + 47977.

It is an arithmetic number, because the mean of its divisors is an integer number (4289310).

Almost surely, 230406123 is an apocalyptic number.

30406123 is a deficient number, since it is larger than the sum of its proper divisors (3908357).

30406123 is a wasteful number, since it uses less digits than its factorization.

30406123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95357.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 30406123 is about 5514.1747342644. The cubic root of 30406123 is about 312.1191024298.

Adding to 30406123 its reverse (32160403), we get a palindrome (62566526).

The spelling of 30406123 in words is "thirty million, four hundred six thousand, one hundred twenty-three".

Divisors: 1 11 29 319 95317 1048487 2764193 30406123