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23031368 = 232878921
BaseRepresentation
bin101011111011…
…0111001001000
31121100010002122
41113312321020
521344000433
62141350412
7366522563
oct127667110
947303078
1023031368
1112000898
127868408
134a05139
1430b74da
15204e198
hex15f6e48

23031368 has 8 divisors (see below), whose sum is σ = 43183830. Its totient is φ = 11515680.

The previous prime is 23031367. The next prime is 23031383. The reversal of 23031368 is 86313032.

It can be written as a sum of positive squares in only one way, i.e., 20775364 + 2256004 = 4558^2 + 1502^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (23031367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1439453 + ... + 1439468.

Almost surely, 223031368 is an apocalyptic number.

It is an amenable number.

23031368 is a deficient number, since it is larger than the sum of its proper divisors (20152462).

23031368 is a wasteful number, since it uses less digits than its factorization.

23031368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878927 (or 2878923 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 23031368 is about 4799.1007490987. The cubic root of 23031368 is about 284.5159239215.

The spelling of 23031368 in words is "twenty-three million, thirty-one thousand, three hundred sixty-eight".

Divisors: 1 2 4 8 2878921 5757842 11515684 23031368