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23983869 = 371387853
BaseRepresentation
bin101101101111…
…1011011111101
31200010111200110
41123133123331
522114440434
62214020233
7410600550
oct133373375
950114613
1023983869
11125a1488
128047679
134c79850
143284697
15218b4e9
hex16df6fd

23983869 has 16 divisors (see below), whose sum is σ = 39358592. Its totient is φ = 12650688.

The previous prime is 23983867. The next prime is 23983901. The reversal of 23983869 is 96838932.

It is not a de Polignac number, because 23983869 - 21 = 23983867 is a prime.

It is a super-2 number, since 2×239838692 = 1150451944418322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23983867) 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 15 ways as a sum of consecutive naturals, for example, 43654 + ... + 44199.

It is an arithmetic number, because the mean of its divisors is an integer number (2459912).

Almost surely, 223983869 is an apocalyptic number.

It is an amenable number.

23983869 is a deficient number, since it is larger than the sum of its proper divisors (15374723).

23983869 is a wasteful number, since it uses less digits than its factorization.

23983869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87876.

The product of its digits is 559872, while the sum is 48.

The square root of 23983869 is about 4897.3328455395. The cubic root of 23983869 is about 288.3852747779.

The spelling of 23983869 in words is "twenty-three million, nine hundred eighty-three thousand, eight hundred sixty-nine".

Divisors: 1 3 7 13 21 39 91 273 87853 263559 614971 1142089 1844913 3426267 7994623 23983869