133490944 has 36 divisors (see below), whose sum is σ = 275664060. Its totient is φ = 64440320.

The previous prime is 133490927. The next prime is 133490989. The reversal of 133490944 is 449094331.

It can be written as a sum of positive squares in 2 ways, for example, as 111513600 + 21977344 = 10560^2 + 4688^2 .

It is a super-2 number, since 2×133490944² = 35639664260022272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1567 + ... + 16414.

It is an arithmetic number, because the mean of its divisors is an integer number (7657335).

Almost surely, 2^133490944 is an apocalyptic number.

It is an amenable number.

133490944 is an abundant number, since it is smaller than the sum of its proper divisors (142173116).

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

133490944 is an equidigital number, since it uses as much as digits as its factorization.

133490944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18026 (or 18012 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 133490944 is about 11553.8281101979. The cubic root of 133490944 is about 511.0741732320.

The spelling of 133490944 in words is "one hundred thirty-three million, four hundred ninety thousand, nine hundred forty-four".