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230157878 = 2649117729
BaseRepresentation
bin11011011011111…
…10111000110110
3121001002020020212
431231332320312
5432410023003
634501025422
75463211136
oct1555767066
9531066225
10230157878
11108a11025
12650b5272
13388b60c2
14227d2ac6
1515314dd8
hexdb7ee36

230157878 has 8 divisors (see below), whose sum is σ = 345309480. Its totient is φ = 115054720.

The previous prime is 230157877. The next prime is 230157899. The reversal of 230157878 is 878751032.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230157877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4118 + ... + 21846.

It is an arithmetic number, because the mean of its divisors is an integer number (43163685).

Almost surely, 2230157878 is an apocalyptic number.

230157878 is a deficient number, since it is larger than the sum of its proper divisors (115151602).

230157878 is a wasteful number, since it uses less digits than its factorization.

230157878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24222.

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 230157878 is about 15170.9550787022. The cubic root of 230157878 is about 612.8327248457.

The spelling of 230157878 in words is "two hundred thirty million, one hundred fifty-seven thousand, eight hundred seventy-eight".

Divisors: 1 2 6491 12982 17729 35458 115078939 230157878