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409313380 = 225712723021
BaseRepresentation
bin11000011001011…
…010000001100100
31001112012021101211
4120121122001210
51314241012010
6104341001204
713100051320
oct3031320144
91045167354
10409313380
111a0057223
12b50b3204
1366a52788
143c50a980
1525e0308a
hex1865a064

409313380 has 48 divisors (see below), whose sum is σ = 990130176. Its totient is φ = 139224960.

The previous prime is 409313353. The next prime is 409313381. The reversal of 409313380 is 83313904.

It is not an unprimeable number, because it can be changed into a prime (409313381) 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 15 ways as a sum of consecutive naturals, for example, 6270 + ... + 29290.

It is an arithmetic number, because the mean of its divisors is an integer number (20627712).

Almost surely, 2409313380 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 409313380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495065088).

409313380 is an abundant number, since it is smaller than the sum of its proper divisors (580816796).

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

409313380 is a wasteful number, since it uses less digits than its factorization.

409313380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23164 (or 23162 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 409313380 is about 20231.4947544664. The cubic root of 409313380 is about 742.4809474114.

The spelling of 409313380 in words is "four hundred nine million, three hundred thirteen thousand, three hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 127 140 254 508 635 889 1270 1778 2540 3556 4445 8890 17780 23021 46042 92084 115105 161147 230210 322294 460420 644588 805735 1611470 2923667 3222940 5847334 11694668 14618335 20465669 29236670 40931338 58473340 81862676 102328345 204656690 409313380