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70206253 = 136837907
BaseRepresentation
bin1000010111101…
…00001100101101
311220002211212121
410023310030231
5120433100003
610544432541
71511512645
oct413641455
9156084777
1070206253
11366a1aa7
121b618751
1311711680
149477525
15626bcbd
hex42f432d

70206253 has 8 divisors (see below), whose sum is σ = 75727008. Its totient is φ = 64702704.

The previous prime is 70206251. The next prime is 70206263. The reversal of 70206253 is 35260207.

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

It is a cyclic number.

It is not a de Polignac number, because 70206253 - 21 = 70206251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70206251) 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, 4926 + ... + 12832.

It is an arithmetic number, because the mean of its divisors is an integer number (9465876).

Almost surely, 270206253 is an apocalyptic number.

It is an amenable number.

70206253 is a deficient number, since it is larger than the sum of its proper divisors (5520755).

70206253 is a wasteful number, since it uses less digits than its factorization.

70206253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8603.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 70206253 is about 8378.9171734777. The cubic root of 70206253 is about 412.5329080572.

The spelling of 70206253 in words is "seventy million, two hundred six thousand, two hundred fifty-three".

Divisors: 1 13 683 7907 8879 102791 5400481 70206253