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2801145 = 35186743
BaseRepresentation
bin1010101011110111111001
312021022110010
422223313321
51204114040
6140012133
732544414
oct12536771
95238403
102801145
1116435a6
12b31049
13770ca9
1452cb7b
153a4e80
hex2abdf9

2801145 has 8 divisors (see below), whose sum is σ = 4481856. Its totient is φ = 1493936.

The previous prime is 2801137. The next prime is 2801179. The reversal of 2801145 is 5411082.

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 2801145 - 23 = 2801137 is a prime.

It is a super-3 number, since 3×28011453 = 65936824242333370875, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93357 + ... + 93386.

It is an arithmetic number, because the mean of its divisors is an integer number (560232).

22801145 is an apocalyptic number.

It is an amenable number.

2801145 is a deficient number, since it is larger than the sum of its proper divisors (1680711).

2801145 is a wasteful number, since it uses less digits than its factorization.

2801145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186751.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2801145 is about 1673.6621522876. The cubic root of 2801145 is about 140.9651843018.

The spelling of 2801145 in words is "two million, eight hundred one thousand, one hundred forty-five".

Divisors: 1 3 5 15 186743 560229 933715 2801145