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230292993 = 3724336433
BaseRepresentation
bin11011011100111…
…11111000000001
3121001100002121010
431232133320001
5432423333433
634503551133
75464313100
oct1556377001
9531302533
10230292993
11108aa3597
126515b4a9
1338932758
142282a037
151533ee63
hexdb9fe01

230292993 has 24 divisors (see below), whose sum is σ = 365505888. Its totient is φ = 128532096.

The previous prime is 230292971. The next prime is 230293001. The reversal of 230292993 is 399292032.

It is not a de Polignac number, because 230292993 - 28 = 230292737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (230292913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11896 + ... + 24537.

It is an arithmetic number, because the mean of its divisors is an integer number (15229412).

Almost surely, 2230292993 is an apocalyptic number.

It is an amenable number.

230292993 is a deficient number, since it is larger than the sum of its proper divisors (135212895).

230292993 is a wasteful number, since it uses less digits than its factorization.

230292993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36493 (or 36486 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 230292993 is about 15175.4075068843. The cubic root of 230292993 is about 612.9526232627.

The spelling of 230292993 in words is "two hundred thirty million, two hundred ninety-two thousand, nine hundred ninety-three".

Divisors: 1 3 7 21 43 49 129 147 301 903 2107 6321 36433 109299 255031 765093 1566619 1785217 4699857 5355651 10966333 32898999 76764331 230292993