133690824 has 48 divisors (see below), whose sum is σ = 375495120. Its totient is φ = 44562960.

The previous prime is 133690793. The next prime is 133690849. The reversal of 133690824 is 428096331.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 32442 + ... + 36329.

It is an arithmetic number, because the mean of its divisors is an integer number (7822815).

Almost surely, 2^133690824 is an apocalyptic number.

It is an amenable number.

133690824 is an abundant number, since it is smaller than the sum of its proper divisors (241804296).

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

133690824 is an equidigital number, since it uses as much as digits as its factorization.

133690824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68792 (or 68776 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 133690824 is about 11562.4748215942. The cubic root of 133690824 is about 511.3291282604.

The spelling of 133690824 in words is "one hundred thirty-three million, six hundred ninety thousand, eight hundred twenty-four".