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253213280 = 2551582583
BaseRepresentation
bin11110001011110…
…11101001100000
3122122110120022122
433011323221200
51004310311110
641043123412
76163164065
oct1705735140
9578416278
10253213280
1111aa28981
1270973568
13405c9158
14258b4c6c
151736b255
hexf17ba60

253213280 has 24 divisors (see below), whose sum is σ = 598216752. Its totient is φ = 101285248.

The previous prime is 253213231. The next prime is 253213307. The reversal of 253213280 is 82312352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791132 + ... + 791451.

It is an arithmetic number, because the mean of its divisors is an integer number (24925698).

Almost surely, 2253213280 is an apocalyptic number.

253213280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253213280 is an abundant number, since it is smaller than the sum of its proper divisors (345003472).

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

253213280 is a wasteful number, since it uses less digits than its factorization.

253213280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582598 (or 1582590 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 253213280 is about 15912.6767075813. The cubic root of 253213280 is about 632.6480294270.

The spelling of 253213280 in words is "two hundred fifty-three million, two hundred thirteen thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 1582583 3165166 6330332 7912915 12660664 15825830 25321328 31651660 50642656 63303320 126606640 253213280