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133040 = 2451663
BaseRepresentation
bin100000011110110000
320202111102
4200132300
513224130
62503532
71062605
oct403660
9222442
10133040
1190a56
1264ba8
134872b
14366ac
1529645
hex207b0

133040 has 20 divisors (see below), whose sum is σ = 309504. Its totient is φ = 53184.

The previous prime is 133039. The next prime is 133051. The reversal of 133040 is 40331.

Adding to 133040 its reverse (40331), we get a palindrome (173371).

It is a tau number, because it is divible by the number of its divisors (20).

It is a plaindrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752 + ... + 911.

2133040 is an apocalyptic number.

133040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133040 is an abundant number, since it is smaller than the sum of its proper divisors (176464).

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

133040 is a wasteful number, since it uses less digits than its factorization.

133040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676 (or 1670 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 133040 is about 364.7464873032. The cubic root of 133040 is about 51.0498039690.

The spelling of 133040 in words is "one hundred thirty-three thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1663 3326 6652 8315 13304 16630 26608 33260 66520 133040