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8341840 = 245132617
BaseRepresentation
bin11111110100100101010000
3120200210212001
4133310211100
54113414330
6454443344
7130622143
oct37644520
916623761
108341840
114788391
122963554
131960c00
14117205a
15aeb9ca
hex7f4950

8341840 has 60 divisors (see below), whose sum is σ = 21035484. Its totient is φ = 3075072.

The previous prime is 8341831. The next prime is 8341841. The reversal of 8341840 is 481438.

It can be written as a sum of positive squares in 6 ways, for example, as 4032064 + 4309776 = 2008^2 + 2076^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8341799 and 8341808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8341841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13212 + ... + 13828.

Almost surely, 28341840 is an apocalyptic number.

8341840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8341840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10517742).

8341840 is an abundant number, since it is smaller than the sum of its proper divisors (12693644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8341840 is a wasteful number, since it uses less digits than its factorization.

8341840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 8341840 is about 2888.2243680158. The cubic root of 8341840 is about 202.8090287455.

The spelling of 8341840 in words is "eight million, three hundred forty-one thousand, eight hundred forty".

Divisors: 1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 130 169 208 260 338 520 617 676 845 1040 1234 1352 1690 2468 2704 3085 3380 4936 6170 6760 8021 9872 12340 13520 16042 24680 32084 40105 49360 64168 80210 104273 128336 160420 208546 320840 417092 521365 641680 834184 1042730 1668368 2085460 4170920 8341840