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230120392 = 2328765049
BaseRepresentation
bin11011011011101…
…01101111001000
3121001000022211111
431231311233020
5432402323032
634500140104
75462663635
oct1555655710
9531008744
10230120392
11108995947
1265097634
13388a2018
14227c318c
1515308c47
hexdb75bc8

230120392 has 8 divisors (see below), whose sum is σ = 431475750. Its totient is φ = 115060192.

The previous prime is 230120389. The next prime is 230120441. The reversal of 230120392 is 293021032.

It can be written as a sum of positive squares in only one way, i.e., 126202756 + 103917636 = 11234^2 + 10194^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 14382517 + ... + 14382532.

Almost surely, 2230120392 is an apocalyptic number.

It is an amenable number.

230120392 is a deficient number, since it is larger than the sum of its proper divisors (201355358).

230120392 is a wasteful number, since it uses less digits than its factorization.

230120392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28765055 (or 28765051 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 230120392 is about 15169.7195755228. The cubic root of 230120392 is about 612.7994521852.

The spelling of 230120392 in words is "two hundred thirty million, one hundred twenty thousand, three hundred ninety-two".

Divisors: 1 2 4 8 28765049 57530098 115060196 230120392