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23381370 = 23252391087
BaseRepresentation
bin101100100110…
…0010101111010
31121222220012200
41121030111322
521441200440
62153051030
7402511155
oct131142572
947886180
1023381370
111221a851
1279b6a76
134ac853c
143168c9c
1520bcc30
hex164c57a

23381370 has 48 divisors (see below), whose sum is σ = 61102080. Its totient is φ = 6203232.

The previous prime is 23381359. The next prime is 23381377. The reversal of 23381370 is 7318332.

It is not an unprimeable number, because it can be changed into a prime (23381377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20967 + ... + 22053.

It is an arithmetic number, because the mean of its divisors is an integer number (1272960).

Almost surely, 223381370 is an apocalyptic number.

23381370 is an abundant number, since it is smaller than the sum of its proper divisors (37720710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23381370 is a wasteful number, since it uses less digits than its factorization.

23381370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 23381370 is about 4835.4286262957. The cubic root of 23381370 is about 285.9499235845.

The spelling of 23381370 in words is "twenty-three million, three hundred eighty-one thousand, three hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 239 478 717 1087 1195 1434 2151 2174 2390 3261 3585 4302 5435 6522 7170 9783 10755 10870 16305 19566 21510 32610 48915 97830 259793 519586 779379 1298965 1558758 2338137 2597930 3896895 4676274 7793790 11690685 23381370