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12028429 = 77323539
BaseRepresentation
bin101101111000…
…101000001101
3211122002220101
4231320220031
511034402204
61105451101
7204145210
oct55705015
924562811
1012028429
116876156
124040a91
132651c1a
141851777
1510c8ea4
hexb78a0d

12028429 has 8 divisors (see below), whose sum is σ = 13935680. Its totient is φ = 10168416.

The previous prime is 12028421. The next prime is 12028447. The reversal of 12028429 is 92482021.

12028429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12028429 - 23 = 12028421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12028397 and 12028406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12028421) 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, 11259 + ... + 12280.

It is an arithmetic number, because the mean of its divisors is an integer number (1741960).

Almost surely, 212028429 is an apocalyptic number.

It is an amenable number.

12028429 is a deficient number, since it is larger than the sum of its proper divisors (1907251).

12028429 is an equidigital number, since it uses as much as digits as its factorization.

12028429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23619.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 12028429 is about 3468.2025604050. The cubic root of 12028429 is about 229.1235008211.

The spelling of 12028429 in words is "twelve million, twenty-eight thousand, four hundred twenty-nine".

Divisors: 1 7 73 511 23539 164773 1718347 12028429