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72568103 = 329921997
BaseRepresentation
bin1000101001101…
…00110100100111
312001112211201112
410110310310213
5122034134403
611111215235
71540550546
oct424646447
9161484645
1072568103
1137a65543
122037751b
131205a70a
1498d015d
1565869d8
hex4534d27

72568103 has 4 divisors (see below), whose sum is σ = 72593400. Its totient is φ = 72542808.

The previous prime is 72568099. The next prime is 72568127. The reversal of 72568103 is 30186527.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30186527 = 74312361.

It is a cyclic number.

It is not a de Polignac number, because 72568103 - 22 = 72568099 is a prime.

It is a super-2 number, since 2×725681032 = 10532259146037218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72568103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72568003) 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 3 ways as a sum of consecutive naturals, for example, 7700 + ... + 14297.

It is an arithmetic number, because the mean of its divisors is an integer number (18148350).

Almost surely, 272568103 is an apocalyptic number.

72568103 is a deficient number, since it is larger than the sum of its proper divisors (25297).

72568103 is a wasteful number, since it uses less digits than its factorization.

72568103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25296.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 72568103 is about 8518.6913901139. The cubic root of 72568103 is about 417.1080677688.

The spelling of 72568103 in words is "seventy-two million, five hundred sixty-eight thousand, one hundred three".

Divisors: 1 3299 21997 72568103