133069440 has 128 divisors (see below), whose sum is σ = 484801920. Its totient is φ = 30412800.

The previous prime is 133069439. The next prime is 133069499. The reversal of 133069440 is 44960331.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 133069398 and 133069407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8490 + ... + 18390.

It is an arithmetic number, because the mean of its divisors is an integer number (3787515).

Almost surely, 2^133069440 is an apocalyptic number.

133069440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133069440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242400960).

133069440 is an abundant number, since it is smaller than the sum of its proper divisors (351732480).

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

133069440 is an equidigital number, since it uses as much as digits as its factorization.

133069440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9930 (or 9918 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 133069440 is about 11535.5728076242. The cubic root of 133069440 is about 510.5356924103.

The spelling of 133069440 in words is "one hundred thirty-three million, sixty-nine thousand, four hundred forty".