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8253947 = 132272797
BaseRepresentation
bin11111011111000111111011
3120112100021202
4133133013323
54103111242
6452524415
7130104662
oct37370773
916470252
108253947
114728349
12292070b
13192cbc0
14114bdd9
15ad0932
hex7df1fb

8253947 has 8 divisors (see below), whose sum is σ = 8931216. Its totient is φ = 7582752.

The previous prime is 8253943. The next prime is 8253953. The reversal of 8253947 is 7493528.

8253947 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8253947 - 22 = 8253943 is a prime.

It is an Ulam number.

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 8253947.

It is not an unprimeable number, because it can be changed into a prime (8253943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1553 + ... + 4349.

It is an arithmetic number, because the mean of its divisors is an integer number (1116402).

Almost surely, 28253947 is an apocalyptic number.

8253947 is a deficient number, since it is larger than the sum of its proper divisors (677269).

8253947 is a wasteful number, since it uses less digits than its factorization.

8253947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037.

The product of its digits is 60480, while the sum is 38.

The square root of 8253947 is about 2872.9683256173. The cubic root of 8253947 is about 202.0942196802.

The spelling of 8253947 in words is "eight million, two hundred fifty-three thousand, nine hundred forty-seven".

Divisors: 1 13 227 2797 2951 36361 634919 8253947