133744420 has 24 divisors (see below), whose sum is σ = 295646400. Its totient is φ = 50681952.

The previous prime is 133744411. The next prime is 133744421. The reversal of 133744420 is 24447331.

It is a super-2 number, since 2×133744420² = 35775139762272800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133744421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175600 + ... + 176359.

It is an arithmetic number, because the mean of its divisors is an integer number (12318600).

Almost surely, 2^133744420 is an apocalyptic number.

133744420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133744420 is an abundant number, since it is smaller than the sum of its proper divisors (161901980).

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

133744420 is a wasteful number, since it uses less digits than its factorization.

133744420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351987 (or 351985 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 133744420 is about 11564.7922592669. The cubic root of 133744420 is about 511.3974489169.

The spelling of 133744420 in words is "one hundred thirty-three million, seven hundred forty-four thousand, four hundred twenty".