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23514021 = 324575717
BaseRepresentation
bin101100110110…
…0101110100101
31122020122011200
41121230232211
522004422041
62155553113
7403602666
oct131545645
948218150
1023514021
1112300483
127a5b799
134b43a2b
1431a136d
1520e71b6
hex166cba5

23514021 has 12 divisors (see below), whose sum is σ = 34044972. Its totient is φ = 15638976.

The previous prime is 23514019. The next prime is 23514031. The reversal of 23514021 is 12041532.

It can be written as a sum of positive squares in 2 ways, for example, as 17313921 + 6200100 = 4161^2 + 2490^2 .

It is not a de Polignac number, because 23514021 - 21 = 23514019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23513985 and 23514003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23514011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1255 + ... + 6971.

It is an arithmetic number, because the mean of its divisors is an integer number (2837081).

Almost surely, 223514021 is an apocalyptic number.

It is an amenable number.

23514021 is a deficient number, since it is larger than the sum of its proper divisors (10530951).

23514021 is a wasteful number, since it uses less digits than its factorization.

23514021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6180 (or 6177 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 23514021 is about 4849.1257975021. The cubic root of 23514021 is about 286.4896700496.

Adding to 23514021 its reverse (12041532), we get a palindrome (35555553).

The spelling of 23514021 in words is "twenty-three million, five hundred fourteen thousand, twenty-one".

Divisors: 1 3 9 457 1371 4113 5717 17151 51453 2612669 7838007 23514021