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23980205 = 5311311181
BaseRepresentation
bin101101101111…
…0100010101101
31200010022122202
41123132202231
522114331310
62213551245
7410554064
oct133364255
950108582
1023980205
1112599757
128045525
134c77c92
1432831db
15218a3a5
hex16de8ad

23980205 has 16 divisors (see below), whose sum is σ = 29956608. Its totient is φ = 18408000.

The previous prime is 23980189. The next prime is 23980211. The reversal of 23980205 is 50208932.

It is not a de Polignac number, because 23980205 - 24 = 23980189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19715 + ... + 20895.

It is an arithmetic number, because the mean of its divisors is an integer number (1872288).

Almost surely, 223980205 is an apocalyptic number.

It is an amenable number.

23980205 is a deficient number, since it is larger than the sum of its proper divisors (5976403).

23980205 is a wasteful number, since it uses less digits than its factorization.

23980205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 23980205 is about 4896.9587500815. The cubic root of 23980205 is about 288.3705885534.

The spelling of 23980205 in words is "twenty-three million, nine hundred eighty thousand, two hundred five".

Divisors: 1 5 31 131 155 655 1181 4061 5905 20305 36611 154711 183055 773555 4796041 23980205