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8494780 = 2257471291
BaseRepresentation
bin100000011001…
…111010111100
3120222120122111
4200121322330
54133313110
6502023404
7132130060
oct40317274
916876574
108494780
114882288
122a17b64
1319b56c8
1411b1aa0
15b2be8a
hex819ebc

8494780 has 48 divisors (see below), whose sum is σ = 20837376. Its totient is φ = 2848320.

The previous prime is 8494769. The next prime is 8494813. The reversal of 8494780 is 874948.

8494780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×84947802 = 144322574496800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5935 + ... + 7225.

It is an arithmetic number, because the mean of its divisors is an integer number (434112).

Almost surely, 28494780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8494780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10418688).

8494780 is an abundant number, since it is smaller than the sum of its proper divisors (12342596).

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

8494780 is a wasteful number, since it uses less digits than its factorization.

8494780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1352 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 8494780 is about 2914.5805873230. The cubic root of 8494780 is about 204.0409696005.

It can be divided in two parts, 84 and 94780, that added together give a square (94864 = 3082).

The spelling of 8494780 in words is "eight million, four hundred ninety-four thousand, seven hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 47 70 94 140 188 235 329 470 658 940 1291 1316 1645 2582 3290 5164 6455 6580 9037 12910 18074 25820 36148 45185 60677 90370 121354 180740 242708 303385 424739 606770 849478 1213540 1698956 2123695 4247390 8494780