133281470 has 24 divisors (see below), whose sum is σ = 279076104. Its totient is φ = 45696336.

The previous prime is 133281469. The next prime is 133281487. The reversal of 133281470 is 74182331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135512 + ... + 136491.

It is an arithmetic number, because the mean of its divisors is an integer number (11628171).

Almost surely, 2^133281470 is an apocalyptic number.

133281470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133281470 is an abundant number, since it is smaller than the sum of its proper divisors (145794634).

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

133281470 is a wasteful number, since it uses less digits than its factorization.

133281470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272024 (or 272017 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 133281470 is about 11544.7594171555. The cubic root of 133281470 is about 510.8067074029.

The spelling of 133281470 in words is "one hundred thirty-three million, two hundred eighty-one thousand, four hundred seventy".