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133806812 = 22294192753
BaseRepresentation
bin1111111100110…
…11101011011100
3100022210002102212
413332123223130
5233223304222
621135535552
73213224216
oct776335334
9308702385
10133806812
1169592047
123898a5b8
132194c439
1413ab15b6
15bb316e2
hex7f9badc

133806812 has 24 divisors (see below), whose sum is σ = 242902800. Its totient is φ = 64418816.

The previous prime is 133806781. The next prime is 133806823. The reversal of 133806812 is 218608331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47228 + ... + 49980.

It is an arithmetic number, because the mean of its divisors is an integer number (10120950).

Almost surely, 2133806812 is an apocalyptic number.

It is an amenable number.

133806812 is a deficient number, since it is larger than the sum of its proper divisors (109095988).

133806812 is a wasteful number, since it uses less digits than its factorization.

133806812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205 (or 3203 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 133806812 is about 11567.4894423985. The cubic root of 133806812 is about 511.4769591483.

The spelling of 133806812 in words is "one hundred thirty-three million, eight hundred six thousand, eight hundred twelve".

Divisors: 1 2 4 29 58 116 419 838 1676 2753 5506 11012 12151 24302 48604 79837 159674 319348 1153507 2307014 4614028 33451703 66903406 133806812