133416640 has 56 divisors (see below), whose sum is σ = 363089952. Its totient is φ = 45742080.

The previous prime is 133416637. The next prime is 133416683. The reversal of 133416640 is 46614331.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 133416599 and 133416608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27541 + ... + 32020.

Almost surely, 2^133416640 is an apocalyptic number.

133416640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133416640 is an abundant number, since it is smaller than the sum of its proper divisors (229673312).

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

133416640 is an equidigital number, since it uses as much as digits as its factorization.

133416640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59585 (or 59575 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 133416640 is about 11550.6121049925. The cubic root of 133416640 is about 510.9793305850.

The spelling of 133416640 in words is "one hundred thirty-three million, four hundred sixteen thousand, six hundred forty".