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8013923 = 47170509
BaseRepresentation
bin11110100100100001100011
3120002011000222
4132210201203
54022421143
6443433255
7125055131
oct36444143
916064028
108013923
114583a85
12282582b
131877888
1410c8751
15a84768
hex7a4863

8013923 has 4 divisors (see below), whose sum is σ = 8184480. Its totient is φ = 7843368.

The previous prime is 8013917. The next prime is 8013949. The reversal of 8013923 is 3293108.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8013923 - 220 = 6965347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8013892 and 8013901.

It is not an unprimeable number, because it can be changed into a prime (8013323) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 85208 + ... + 85301.

It is an arithmetic number, because the mean of its divisors is an integer number (2046120).

Almost surely, 28013923 is an apocalyptic number.

8013923 is a deficient number, since it is larger than the sum of its proper divisors (170557).

8013923 is a wasteful number, since it uses less digits than its factorization.

8013923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170556.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 8013923 is about 2830.8873167260. The cubic root of 8013923 is about 200.1159577560.

The spelling of 8013923 in words is "eight million, thirteen thousand, nine hundred twenty-three".

Divisors: 1 47 170509 8013923