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23903825 = 521186923
BaseRepresentation
bin101101100101…
…1111001010001
31122222102212212
41123023321101
522104410300
62212201505
7410115311
oct133137121
948872785
1023903825
1112547330
128009295
134c4c29a
143263441
152172935
hex16cbe51

23903825 has 12 divisors (see below), whose sum is σ = 32335728. Its totient is φ = 17384400.

The previous prime is 23903797. The next prime is 23903833. The reversal of 23903825 is 52830932.

It is not a de Polignac number, because 23903825 - 214 = 23887441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23903791 and 23903800.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43187 + ... + 43736.

It is an arithmetic number, because the mean of its divisors is an integer number (2694644).

Almost surely, 223903825 is an apocalyptic number.

23903825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23903825 is a deficient number, since it is larger than the sum of its proper divisors (8431903).

23903825 is a wasteful number, since it uses less digits than its factorization.

23903825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86944 (or 86939 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 23903825 is about 4889.1538122665. The cubic root of 23903825 is about 288.0640972625.

The spelling of 23903825 in words is "twenty-three million, nine hundred three thousand, eight hundred twenty-five".

Divisors: 1 5 11 25 55 275 86923 434615 956153 2173075 4780765 23903825