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230518049 = 1491547101
BaseRepresentation
bin11011011110101…
…10110100100001
3121001202112022112
431233112310201
5433003034144
634512445105
75466241166
oct1557266441
9531675275
10230518049
11109137693
1265249795
13389b1018
142288806d
151538699e
hexdbd6d21

230518049 has 4 divisors (see below), whose sum is σ = 232065300. Its totient is φ = 228970800.

The previous prime is 230518039. The next prime is 230518061. The reversal of 230518049 is 940815032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7463824 + 223054225 = 2732^2 + 14935^2 .

It is a cyclic number.

It is not a de Polignac number, because 230518049 - 224 = 213740833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230518039) 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, 773402 + ... + 773699.

It is an arithmetic number, because the mean of its divisors is an integer number (58016325).

Almost surely, 2230518049 is an apocalyptic number.

It is an amenable number.

230518049 is a deficient number, since it is larger than the sum of its proper divisors (1547251).

230518049 is a wasteful number, since it uses less digits than its factorization.

230518049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547250.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 230518049 is about 15182.8208512121. The cubic root of 230518049 is about 613.1522294990.

The spelling of 230518049 in words is "two hundred thirty million, five hundred eighteen thousand, forty-nine".

Divisors: 1 149 1547101 230518049