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494635680 = 253357111487
BaseRepresentation
bin11101011110111…
…000101010100000
31021110202002121000
4131132320222200
52003111320210
6121025432000
715154222350
oct3536705240
91243662530
10494635680
11234233120
1211979b600
137b627546
144999ab60
152d658ac0
hex1d7b8aa0

494635680 has 384 divisors, whose sum is σ = 2159861760. Its totient is φ = 102712320.

The previous prime is 494635667. The next prime is 494635681. The reversal of 494635680 is 86536494.

494635680 is a `hidden beast` number, since 4 + 9 + 4 + 635 + 6 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494635681) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 331897 + ... + 333383.

It is an arithmetic number, because the mean of its divisors is an integer number (5624640).

Almost surely, 2494635680 is an apocalyptic number.

494635680 is a gapful number since it is divisible by the number (40) 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 494635680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079930880).

494635680 is an abundant number, since it is smaller than the sum of its proper divisors (1665226080).

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

494635680 is a wasteful number, since it uses less digits than its factorization.

494635680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529 (or 1515 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 494635680 is about 22240.4064711057. The cubic root of 494635680 is about 790.8518717658.

The spelling of 494635680 in words is "four hundred ninety-four million, six hundred thirty-five thousand, six hundred eighty".