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12029873 = 57720849
BaseRepresentation
bin101101111000…
…111110110001
3211122011212212
4231320332301
511034423443
61105501505
7204152342
oct55707661
924564785
1012029873
116877249
124041895
13265278b
1418520c9
1510c9618
hexb78fb1

12029873 has 4 divisors (see below), whose sum is σ = 12051300. Its totient is φ = 12008448.

The previous prime is 12029837. The next prime is 12029881. The reversal of 12029873 is 37892021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11641744 + 388129 = 3412^2 + 623^2 .

It is a cyclic number.

It is not a de Polignac number, because 12029873 - 28 = 12029617 is a prime.

It is a super-2 number, since 2×120298732 = 289435688792258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12029573) 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, 9848 + ... + 11001.

It is an arithmetic number, because the mean of its divisors is an integer number (3012825).

Almost surely, 212029873 is an apocalyptic number.

It is an amenable number.

12029873 is a deficient number, since it is larger than the sum of its proper divisors (21427).

12029873 is an equidigital number, since it uses as much as digits as its factorization.

12029873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21426.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 12029873 is about 3468.4107311563. The cubic root of 12029873 is about 229.1326691311.

The spelling of 12029873 in words is "twelve million, twenty-nine thousand, eight hundred seventy-three".

Divisors: 1 577 20849 12029873