133348028 has 24 divisors (see below), whose sum is σ = 255077424. Its totient is φ = 60492800.

The previous prime is 133348027. The next prime is 133348069. The reversal of 133348028 is 820843331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 133347985 and 133348003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133348021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21788 + ... + 27228.

It is an arithmetic number, because the mean of its divisors is an integer number (10628226).

Almost surely, 2^133348028 is an apocalyptic number.

It is an amenable number.

133348028 is a deficient number, since it is larger than the sum of its proper divisors (121729396).

133348028 is a wasteful number, since it uses less digits than its factorization.

133348028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013 (or 6011 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 133348028 is about 11547.6416639936. The cubic root of 133348028 is about 510.8917220091.

The spelling of 133348028 in words is "one hundred thirty-three million, three hundred forty-eight thousand, twenty-eight".