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230156445 = 3515343763
BaseRepresentation
bin11011011011111…
…10100010011101
3121001002011021210
431231332202131
5432410001240
634501015033
75463204021
oct1555764235
9531064253
10230156445
11108a0aa42
12650b4479
13388b555c
14227d2381
1515314780
hexdb7e89d

230156445 has 8 divisors (see below), whose sum is σ = 368250336. Its totient is φ = 122750096.

The previous prime is 230156417. The next prime is 230156449. The reversal of 230156445 is 544651032.

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

It is a cyclic number.

It is not a de Polignac number, because 230156445 - 220 = 229107869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230156449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7671867 + ... + 7671896.

It is an arithmetic number, because the mean of its divisors is an integer number (46031292).

Almost surely, 2230156445 is an apocalyptic number.

It is an amenable number.

230156445 is a deficient number, since it is larger than the sum of its proper divisors (138093891).

230156445 is a wasteful number, since it uses less digits than its factorization.

230156445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15343771.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 230156445 is about 15170.9078502244. The cubic root of 230156445 is about 612.8314529780.

The spelling of 230156445 in words is "two hundred thirty million, one hundred fifty-six thousand, four hundred forty-five".

Divisors: 1 3 5 15 15343763 46031289 76718815 230156445