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248215 = 5114513
BaseRepresentation
bin111100100110010111
3110121111011
4330212113
530420330
65153051
72052442
oct744627
9417434
10248215
1115a540
12bb787
1388c96
1466659
154d82a
hex3c997

248215 has 8 divisors (see below), whose sum is σ = 325008. Its totient is φ = 180480.

The previous prime is 248203. The next prime is 248231. The reversal of 248215 is 512842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 248215 - 211 = 246167 is a prime.

It is a super-2 number, since 2×2482152 = 123221372450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2202 + ... + 2311.

It is an arithmetic number, because the mean of its divisors is an integer number (40626).

2248215 is an apocalyptic number.

248215 is a deficient number, since it is larger than the sum of its proper divisors (76793).

248215 is a wasteful number, since it uses less digits than its factorization.

248215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4529.

The product of its digits is 640, while the sum is 22.

The square root of 248215 is about 498.2118023492. The cubic root of 248215 is about 62.8457636327.

The spelling of 248215 in words is "two hundred forty-eight thousand, two hundred fifteen".

Divisors: 1 5 11 55 4513 22565 49643 248215