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2800223 = 171271297
BaseRepresentation
bin1010101011101001011111
312021021011222
422223221133
51204101343
6140003555
732541626
oct12535137
95237158
102800223
111642938
12b305bb
1377074a
1452c6bd
153a4a68
hex2aba5f

2800223 has 8 divisors (see below), whose sum is σ = 2990592. Its totient is φ = 2612736.

The previous prime is 2800219. The next prime is 2800241. The reversal of 2800223 is 3220082.

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 2800223 - 22 = 2800219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800283) 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, 1511 + ... + 2807.

It is an arithmetic number, because the mean of its divisors is an integer number (373824).

22800223 is an apocalyptic number.

2800223 is a deficient number, since it is larger than the sum of its proper divisors (190369).

2800223 is a wasteful number, since it uses less digits than its factorization.

2800223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2800223 is about 1673.3866857364. The cubic root of 2800223 is about 140.9497163220.

The spelling of 2800223 in words is "two million, eight hundred thousand, two hundred twenty-three".

Divisors: 1 17 127 1297 2159 22049 164719 2800223