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203930629 = 7191533313
BaseRepresentation
bin11000010011110…
…11110000000101
3112012201202020021
430021323300011
5404201240004
632122535141
75024244640
oct1411736005
9465652207
10203930629
11a5128111
12583674b1
1333332416
141d126a57
1512d83d54
hexc27bc05

203930629 has 8 divisors (see below), whose sum is σ = 245330240. Its totient is φ = 165597696.

The previous prime is 203930621. The next prime is 203930641. The reversal of 203930629 is 926039302.

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

It is a 5-Lehmer number, since φ(203930629) divides (203930629-1)5.

It is a cyclic number.

It is not a de Polignac number, because 203930629 - 23 = 203930621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203930594 and 203930603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203930621) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 766524 + ... + 766789.

It is an arithmetic number, because the mean of its divisors is an integer number (30666280).

Almost surely, 2203930629 is an apocalyptic number.

It is an amenable number.

203930629 is a deficient number, since it is larger than the sum of its proper divisors (41399611).

203930629 is a wasteful number, since it uses less digits than its factorization.

203930629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533339.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 203930629 is about 14280.4281798551. The cubic root of 203930629 is about 588.6097968689.

The spelling of 203930629 in words is "two hundred three million, nine hundred thirty thousand, six hundred twenty-nine".

Divisors: 1 7 19 133 1533313 10733191 29132947 203930629