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3280057 = 11298187
BaseRepresentation
bin1100100000110010111001
320011122101121
430200302321
51314430212
6154145241
736610564
oct14406271
96148347
103280057
1119403a0
121122221
138aac81
146154db
1544bd07
hex320cb9

3280057 has 4 divisors (see below), whose sum is σ = 3578256. Its totient is φ = 2981860.

The previous prime is 3280037. The next prime is 3280061. The reversal of 3280057 is 7500823.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3280057 - 219 = 2755769 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3280037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149083 + ... + 149104.

It is an arithmetic number, because the mean of its divisors is an integer number (894564).

Almost surely, 23280057 is an apocalyptic number.

It is an amenable number.

3280057 is a deficient number, since it is larger than the sum of its proper divisors (298199).

3280057 is a wasteful number, since it uses less digits than its factorization.

3280057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298198.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 3280057 is about 1811.0927640516. The cubic root of 3280057 is about 148.5800374960.

It can be divided in two parts, 32 and 80057, that added together give a square (80089 = 2832).

The spelling of 3280057 in words is "three million, two hundred eighty thousand, fifty-seven".

Divisors: 1 11 298187 3280057