133978298 has 8 divisors (see below), whose sum is σ = 201321120. Its totient is φ = 66871260.

The previous prime is 133978297. The next prime is 133978301. The reversal of 133978298 is 892879331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (133978297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57518 + ... + 59801.

It is an arithmetic number, because the mean of its divisors is an integer number (25165140).

Almost surely, 2^133978298 is an apocalyptic number.

133978298 is a deficient number, since it is larger than the sum of its proper divisors (67342822).

133978298 is a wasteful number, since it uses less digits than its factorization.

133978298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117892.

The product of its digits is 653184, while the sum is 50.

The square root of 133978298 is about 11574.8994812050. The cubic root of 133978298 is about 511.6953677957.

The spelling of 133978298 in words is "one hundred thirty-three million, nine hundred seventy-eight thousand, two hundred ninety-eight".