133640824 has 16 divisors (see below), whose sum is σ = 253749600. Its totient is φ = 65974272.

The previous prime is 133640821. The next prime is 133640827. The reversal of 133640824 is 428046331.

133640824 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (133640821) and next prime (133640827).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133640821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105097 + ... + 106360.

It is an arithmetic number, because the mean of its divisors is an integer number (15859350).

Almost surely, 2^133640824 is an apocalyptic number.

It is an amenable number.

133640824 is a deficient number, since it is larger than the sum of its proper divisors (120108776).

133640824 is a wasteful number, since it uses less digits than its factorization.

133640824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211542 (or 211538 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 133640824 is about 11560.3124525248. The cubic root of 133640824 is about 511.2653750834.

The spelling of 133640824 in words is "one hundred thirty-three million, six hundred forty thousand, eight hundred twenty-four".