133468428 has 24 divisors (see below), whose sum is σ = 329746032. Its totient is φ = 41872384.

The previous prime is 133468421. The next prime is 133468441. The reversal of 133468428 is 824864331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133468421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326925 + ... + 327332.

It is an arithmetic number, because the mean of its divisors is an integer number (13739418).

Almost surely, 2^133468428 is an apocalyptic number.

It is an amenable number.

133468428 is an abundant number, since it is smaller than the sum of its proper divisors (196277604).

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

133468428 is a wasteful number, since it uses less digits than its factorization.

133468428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654281 (or 654279 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 133468428 is about 11552.8536734436. The cubic root of 133468428 is about 511.0454372174.

The spelling of 133468428 in words is "one hundred thirty-three million, four hundred sixty-eight thousand, four hundred twenty-eight".