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253857130 = 2525385713
BaseRepresentation
bin11110010000110…
…00110101101010
3122200200021111221
433020120311222
51004441412010
641105012254
76201515152
oct1710306552
9580607457
10253857130
1112032868a
127102408a
1340793227
1425a01762
1517446dda
hexf218d6a

253857130 has 8 divisors (see below), whose sum is σ = 456942852. Its totient is φ = 101542848.

The previous prime is 253857127. The next prime is 253857143. The reversal of 253857130 is 31758352.

253857130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 238980681 + 14876449 = 15459^2 + 3857^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 12692847 + ... + 12692866.

Almost surely, 2253857130 is an apocalyptic number.

253857130 is a deficient number, since it is larger than the sum of its proper divisors (203085722).

253857130 is a wasteful number, since it uses less digits than its factorization.

253857130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25385720.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 253857130 is about 15932.8945894963. The cubic root of 253857130 is about 633.1837907932.

The spelling of 253857130 in words is "two hundred fifty-three million, eight hundred fifty-seven thousand, one hundred thirty".

Divisors: 1 2 5 10 25385713 50771426 126928565 253857130