133656798 has 16 divisors (see below), whose sum is σ = 291614976. Its totient is φ = 40502040.

The previous prime is 133656791. The next prime is 133656821. The reversal of 133656798 is 897656331.

It is a happy number.

It is a super-2 number, since 2×133656798² = 35728279303225608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133656791) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1012486 + ... + 1012617.

It is an arithmetic number, because the mean of its divisors is an integer number (18225936).

Almost surely, 2^133656798 is an apocalyptic number.

133656798 is an abundant number, since it is smaller than the sum of its proper divisors (157958178).

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

133656798 is a wasteful number, since it uses less digits than its factorization.

133656798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025119.

The product of its digits is 816480, while the sum is 48.

The square root of 133656798 is about 11561.0033301613. The cubic root of 133656798 is about 511.2857446767.

The spelling of 133656798 in words is "one hundred thirty-three million, six hundred fifty-six thousand, seven hundred ninety-eight".