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230251642 = 2115125821
BaseRepresentation
bin11011011100101…
…01110001111010
3121001020222212121
431232111301322
5432421023032
634503031454
75464051405
oct1556256172
9531228777
10230251642
11108a75515
126513b58a
133891999a
1422818d3c
1515332a97
hexdb95c7a

230251642 has 4 divisors (see below), whose sum is σ = 345377466. Its totient is φ = 115125820.

The previous prime is 230251639. The next prime is 230251661. The reversal of 230251642 is 246152032.

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

It can be written as a sum of positive squares in only one way, i.e., 193515921 + 36735721 = 13911^2 + 6061^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57562909 + ... + 57562912.

Almost surely, 2230251642 is an apocalyptic number.

230251642 is a deficient number, since it is larger than the sum of its proper divisors (115125824).

230251642 is a wasteful number, since it uses less digits than its factorization.

230251642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115125823.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 230251642 is about 15174.0450111366. The cubic root of 230251642 is about 612.9159341726.

The spelling of 230251642 in words is "two hundred thirty million, two hundred fifty-one thousand, six hundred forty-two".

Divisors: 1 2 115125821 230251642