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253080138 = 2342180023
BaseRepresentation
bin11110001010110…
…11001001001010
3122122012210200110
433011123021022
51004242031023
641040215150
76162100653
oct1705331112
9578183613
10253080138
1111a947943
127090a4b6
134058067c
142587c52a
1517341a93
hexf15b24a

253080138 has 8 divisors (see below), whose sum is σ = 506160288. Its totient is φ = 84360044.

The previous prime is 253080131. The next prime is 253080161. The reversal of 253080138 is 831080352.

It is a happy number.

253080138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

253080138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (253080131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21090006 + ... + 21090017.

It is an arithmetic number, because the mean of its divisors is an integer number (63270036).

Almost surely, 2253080138 is an apocalyptic number.

253080138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

253080138 is a wasteful number, since it uses less digits than its factorization.

253080138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42180028.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 253080138 is about 15908.4926375820. The cubic root of 253080138 is about 632.5371258288.

The spelling of 253080138 in words is "two hundred fifty-three million, eighty thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 42180023 84360046 126540069 253080138