133078028 has 12 divisors (see below), whose sum is σ = 235835040. Its totient is φ = 65696592.

The previous prime is 133078007. The next prime is 133078039. The reversal of 133078028 is 820870331.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 133077985 and 133078003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210251 + ... + 210882.

It is an arithmetic number, because the mean of its divisors is an integer number (19652920).

Almost surely, 2^133078028 is an apocalyptic number.

It is an amenable number.

133078028 is a deficient number, since it is larger than the sum of its proper divisors (102757012).

133078028 is a wasteful number, since it uses less digits than its factorization.

133078028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421216 (or 421214 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 133078028 is about 11535.9450414780. The cubic root of 133078028 is about 510.5466751128.

The spelling of 133078028 in words is "one hundred thirty-three million, seventy-eight thousand, twenty-eight".