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253712284 = 22717533009
BaseRepresentation
bin11110001111101…
…01011110011100
3122200101220211021
433013311132130
51004422243114
641101533524
76200342650
oct1707653634
9580356737
10253712284
11120239881
1270b742a4
1340742317
14259a4a60
1517419024
hexf1f579c

253712284 has 24 divisors (see below), whose sum is σ = 537274080. Its totient is φ = 102337536.

The previous prime is 253712257. The next prime is 253712297. The reversal of 253712284 is 482217352.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266029 + ... + 266980.

It is an arithmetic number, because the mean of its divisors is an integer number (22386420).

Almost surely, 2253712284 is an apocalyptic number.

It is an amenable number.

253712284 is an abundant number, since it is smaller than the sum of its proper divisors (283561796).

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

253712284 is a wasteful number, since it uses less digits than its factorization.

253712284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533037 (or 533035 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 253712284 is about 15928.3484391823. The cubic root of 253712284 is about 633.0633403803.

The spelling of 253712284 in words is "two hundred fifty-three million, seven hundred twelve thousand, two hundred eighty-four".

Divisors: 1 2 4 7 14 17 28 34 68 119 238 476 533009 1066018 2132036 3731063 7462126 9061153 14924252 18122306 36244612 63428071 126856142 253712284