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253080807 = 3731388757
BaseRepresentation
bin11110001010110…
…11010011100111
3122122012211121020
433011123103213
51004242041212
641040222223
76162102630
oct1705332347
9578184536
10253080807
1111a9483a1
127090a973
1340580a75
142587c887
1517341d8c
hexf15b4e7

253080807 has 16 divisors (see below), whose sum is σ = 398088192. Its totient is φ = 139952160.

The previous prime is 253080781. The next prime is 253080859. The reversal of 253080807 is 708080352.

It is not a de Polignac number, because 253080807 - 26 = 253080743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253080307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193728 + ... + 195029.

It is an arithmetic number, because the mean of its divisors is an integer number (24880512).

Almost surely, 2253080807 is an apocalyptic number.

253080807 is a deficient number, since it is larger than the sum of its proper divisors (145007385).

253080807 is a wasteful number, since it uses less digits than its factorization.

253080807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388798.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 253080807 is about 15908.5136640731. The cubic root of 253080807 is about 632.5376831845.

The spelling of 253080807 in words is "two hundred fifty-three million, eighty thousand, eight hundred seven".

Divisors: 1 3 7 21 31 93 217 651 388757 1166271 2721299 8163897 12051467 36154401 84360269 253080807