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71430048 = 2532248021
BaseRepresentation
bin1000100000111…
…10111110100000
311222102000121100
410100132332200
5121241230143
611030554400
71525100604
oct420367640
9158360540
1071430048
11373584a8
121bb08a00
1311a4c701
1496b5504
15640e6d3
hex441efa0

71430048 has 36 divisors (see below), whose sum is σ = 203130018. Its totient is φ = 23809920.

The previous prime is 71430013. The next prime is 71430053. The reversal of 71430048 is 84003417.

It can be written as a sum of positive squares in only one way, i.e., 48274704 + 23155344 = 6948^2 + 4812^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123723 + ... + 124298.

Almost surely, 271430048 is an apocalyptic number.

It is an amenable number.

71430048 is an abundant number, since it is smaller than the sum of its proper divisors (131699970).

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

71430048 is a wasteful number, since it uses less digits than its factorization.

71430048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248037 (or 248026 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 71430048 is about 8451.6299019775. The cubic root of 71430048 is about 414.9161256924.

The spelling of 71430048 in words is "seventy-one million, four hundred thirty thousand, forty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 248021 496042 744063 992084 1488126 1984168 2232189 2976252 3968336 4464378 5952504 7936672 8928756 11905008 17857512 23810016 35715024 71430048