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253008078 = 23139303367
BaseRepresentation
bin11110001010010…
…01100011001110
3122122002010211120
433011021203032
51004232224303
641034501410
76161350611
oct1705114316
9578063746
10253008078
1111a8a8794
1270894866
134055692b
1425860178
151732a553
hexf1498ce

253008078 has 16 divisors (see below), whose sum is σ = 509658240. Its totient is φ = 83729016.

The previous prime is 253008037. The next prime is 253008083. The reversal of 253008078 is 870800352.

253008078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150850 + ... + 152517.

It is an arithmetic number, because the mean of its divisors is an integer number (31853640).

Almost surely, 2253008078 is an apocalyptic number.

253008078 is an abundant number, since it is smaller than the sum of its proper divisors (256650162).

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

253008078 is a wasteful number, since it uses less digits than its factorization.

253008078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303511.

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

The square root of 253008078 is about 15906.2276483144. The cubic root of 253008078 is about 632.4770856212.

The spelling of 253008078 in words is "two hundred fifty-three million, eight thousand, seventy-eight".

Divisors: 1 2 3 6 139 278 417 834 303367 606734 910101 1820202 42168013 84336026 126504039 253008078