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23019253 = 197116849
BaseRepresentation
bin101011111001…
…1111011110101
31121022111110221
41113303323311
521343104003
62141214341
7366442345
oct127637365
947274427
1023019253
1111aa2784
1278613b1
1349cc77a
1430b2d25
15204a7bd
hex15f3ef5

23019253 has 4 divisors (see below), whose sum is σ = 23136300. Its totient is φ = 22902208.

The previous prime is 23019247. The next prime is 23019277. The reversal of 23019253 is 35291032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21362884 + 1656369 = 4622^2 + 1287^2 .

It is a cyclic number.

It is not a de Polignac number, because 23019253 - 29 = 23018741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23019223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58228 + ... + 58621.

It is an arithmetic number, because the mean of its divisors is an integer number (5784075).

Almost surely, 223019253 is an apocalyptic number.

It is an amenable number.

23019253 is a deficient number, since it is larger than the sum of its proper divisors (117047).

23019253 is a wasteful number, since it uses less digits than its factorization.

23019253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117046.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 23019253 is about 4797.8383674317. The cubic root of 23019253 is about 284.4660279857.

The spelling of 23019253 in words is "twenty-three million, nineteen thousand, two hundred fifty-three".

Divisors: 1 197 116849 23019253