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253474130 = 25713278543
BaseRepresentation
bin11110001101110…
…11010101010010
3122122221211010202
433012323111102
51004342133010
641052455202
76165331430
oct1706732522
9578854122
10253474130
11120096958
1270a7a502
134068aac0
1425941d50
15173bd6a5
hexf1bb552

253474130 has 32 divisors (see below), whose sum is σ = 561544704. Its totient is φ = 80220096.

The previous prime is 253474129. The next prime is 253474139. The reversal of 253474130 is 31474352.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253474093 and 253474102.

It is not an unprimeable number, because it can be changed into a prime (253474139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138362 + ... + 140181.

It is an arithmetic number, because the mean of its divisors is an integer number (17548272).

Almost surely, 2253474130 is an apocalyptic number.

253474130 is an abundant number, since it is smaller than the sum of its proper divisors (308070574).

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

253474130 is a wasteful number, since it uses less digits than its factorization.

253474130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278570.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 253474130 is about 15920.8708932646. The cubic root of 253474130 is about 632.8651976091.

The spelling of 253474130 in words is "two hundred fifty-three million, four hundred seventy-four thousand, one hundred thirty".

Divisors: 1 2 5 7 10 13 14 26 35 65 70 91 130 182 455 910 278543 557086 1392715 1949801 2785430 3621059 3899602 7242118 9749005 18105295 19498010 25347413 36210590 50694826 126737065 253474130