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8002291 = 111742793
BaseRepresentation
bin11110100001101011110011
3120001120002011
4132201223303
54022033131
6443303351
7125006203
oct36415363
916046064
108002291
114576270
12281ab57
1318724ab
1410c4403
15a810b1
hex7a1af3

8002291 has 8 divisors (see below), whose sum is σ = 9243504. Its totient is φ = 6846720.

The previous prime is 8002283. The next prime is 8002297. The reversal of 8002291 is 1922008.

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 8002291 - 23 = 8002283 is a prime.

It is a super-2 number, since 2×80022912 = 128073322497362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8002297) 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, 21210 + ... + 21583.

It is an arithmetic number, because the mean of its divisors is an integer number (1155438).

Almost surely, 28002291 is an apocalyptic number.

8002291 is a deficient number, since it is larger than the sum of its proper divisors (1241213).

8002291 is a wasteful number, since it uses less digits than its factorization.

8002291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42821.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 8002291 is about 2828.8320911641. The cubic root of 8002291 is about 200.0190898445.

Adding to 8002291 its reverse (1922008), we get a palindrome (9924299).

The spelling of 8002291 in words is "eight million, two thousand, two hundred ninety-one".

Divisors: 1 11 17 187 42793 470723 727481 8002291