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253403248 = 2472262529
BaseRepresentation
bin11110001101010…
…10000001110000
3122122211012220111
433012222001300
51004332400443
641051151104
76164614660
oct1706520160
9578735814
10253403248
1112004867a
1270a45494
1340664767
14259241a0
15173a769d
hexf1aa070

253403248 has 20 divisors (see below), whose sum is σ = 561107440. Its totient is φ = 108601344.

The previous prime is 253403237. The next prime is 253403261. The reversal of 253403248 is 842304352.

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, 1131153 + ... + 1131376.

It is an arithmetic number, because the mean of its divisors is an integer number (28055372).

Almost surely, 2253403248 is an apocalyptic number.

253403248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

253403248 is an abundant number, since it is smaller than the sum of its proper divisors (307704192).

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

253403248 is a wasteful number, since it uses less digits than its factorization.

253403248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262544 (or 2262538 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 253403248 is about 15918.6446659256. The cubic root of 253403248 is about 632.8062002234.

The spelling of 253403248 in words is "two hundred fifty-three million, four hundred three thousand, two hundred forty-eight".

Divisors: 1 2 4 7 8 14 16 28 56 112 2262529 4525058 9050116 15837703 18100232 31675406 36200464 63350812 126701624 253403248