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230037890 = 2523003789
BaseRepresentation
bin11011011011000…
…01100110000010
3121000212010122212
431231201212002
5432342203030
634454302122
75462201255
oct1555414602
9530763585
10230037890
11108939965
1265057942
13388735c4
14227a109c
15152de595
hexdb61982

230037890 has 8 divisors (see below), whose sum is σ = 414068220. Its totient is φ = 92015152.

The previous prime is 230037877. The next prime is 230037901. The reversal of 230037890 is 98730032.

It is a Cunningham number, because it is equal to 151672+1.

It can be written as a sum of positive squares in 2 ways, for example, as 230037889 + 1 = 15167^2 + 1^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11501885 + ... + 11501904.

Almost surely, 2230037890 is an apocalyptic number.

230037890 is a deficient number, since it is larger than the sum of its proper divisors (184030330).

230037890 is a wasteful number, since it uses less digits than its factorization.

230037890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23003796.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 230037890 is about 15167.0000329663. Note that the first 4 decimals coincide. The cubic root of 230037890 is about 612.7262104891.

The spelling of 230037890 in words is "two hundred thirty million, thirty-seven thousand, eight hundred ninety".

Divisors: 1 2 5 10 23003789 46007578 115018945 230037890