133636812 has 24 divisors (see below), whose sum is σ = 313888512. Its totient is φ = 44250000.

The previous prime is 133636807. The next prime is 133636817. The reversal of 133636812 is 218636331.

It is an interprime number because it is at equal distance from previous prime (133636807) and next prime (133636817).

It is not an unprimeable number, because it can be changed into a prime (133636817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35064 + ... + 38687.

It is an arithmetic number, because the mean of its divisors is an integer number (13078688).

Almost surely, 2^133636812 is an apocalyptic number.

133636812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133636812 is an abundant number, since it is smaller than the sum of its proper divisors (180251700).

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

133636812 is a wasteful number, since it uses less digits than its factorization.

133636812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73909 (or 73907 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 133636812 is about 11560.1389265008. The cubic root of 133636812 is about 511.2602588393.

The spelling of 133636812 in words is "one hundred thirty-three million, six hundred thirty-six thousand, eight hundred twelve".