133404720 has 40 divisors (see below), whose sum is σ = 413555376. Its totient is φ = 35574528.

The previous prime is 133404707. The next prime is 133404769. The reversal of 133404720 is 27404331.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a zygodrome in base 2.

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, 277687 + ... + 278166.

Almost surely, 2^133404720 is an apocalyptic number.

133404720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133404720 is an abundant number, since it is smaller than the sum of its proper divisors (280150656).

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

133404720 is a wasteful number, since it uses less digits than its factorization.

133404720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555869 (or 555863 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 133404720 is about 11550.0961034963. The cubic root of 133404720 is about 510.9641124557.

The spelling of 133404720 in words is "one hundred thirty-three million, four hundred four thousand, seven hundred twenty".