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12023115 = 351361657
BaseRepresentation
bin101101110111…
…010101001011
3211121211121120
4231313111023
511034214430
61105410323
7204123546
oct55672513
924554546
1012023115
116872165
1240399a3
13264c690
14184d85d
1510c7610
hexb7754b

12023115 has 16 divisors (see below), whose sum is σ = 20717088. Its totient is φ = 5918976.

The previous prime is 12023059. The next prime is 12023119. The reversal of 12023115 is 51132021.

It is not a de Polignac number, because 12023115 - 26 = 12023051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 12023094 and 12023103.

It is not an unprimeable number, because it can be changed into a prime (12023119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30634 + ... + 31023.

It is an arithmetic number, because the mean of its divisors is an integer number (1294818).

Almost surely, 212023115 is an apocalyptic number.

12023115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12023115 is a deficient number, since it is larger than the sum of its proper divisors (8693973).

12023115 is a wasteful number, since it uses less digits than its factorization.

12023115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61678.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 12023115 is about 3467.4363728842. The cubic root of 12023115 is about 229.0897546124.

Adding to 12023115 its reverse (51132021), we get a palindrome (63155136).

The spelling of 12023115 in words is "twelve million, twenty-three thousand, one hundred fifteen".

Divisors: 1 3 5 13 15 39 65 195 61657 184971 308285 801541 924855 2404623 4007705 12023115