133692720 has 80 divisors (see below), whose sum is σ = 473660160. Its totient is φ = 30557952.

The previous prime is 133692703. The next prime is 133692733. The reversal of 133692720 is 27296331.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 38110 + ... + 41469.

It is an arithmetic number, because the mean of its divisors is an integer number (5920752).

Almost surely, 2^133692720 is an apocalyptic number.

133692720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133692720 is an abundant number, since it is smaller than the sum of its proper divisors (339967440).

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

133692720 is a wasteful number, since it uses less digits than its factorization.

133692720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79602 (or 79596 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 133692720 is about 11562.5568106712. The cubic root of 133692720 is about 511.3315454681.

The spelling of 133692720 in words is "one hundred thirty-three million, six hundred ninety-two thousand, seven hundred twenty".