133858428 has 36 divisors (see below), whose sum is σ = 343315560. Its totient is φ = 40562720.

The previous prime is 133858427. The next prime is 133858451. The reversal of 133858428 is 824858331.

It is a self number, because there is not a number n which added to its sum of digits gives 133858428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133858423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44643 + ... + 47546.

Almost surely, 2^133858428 is an apocalyptic number.

It is an amenable number.

133858428 is an abundant number, since it is smaller than the sum of its proper divisors (209457132).

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

133858428 is a wasteful number, since it uses less digits than its factorization.

133858428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92218 (or 92205 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 133858428 is about 11569.7203077689. The cubic root of 133858428 is about 511.5427181342.

The spelling of 133858428 in words is "one hundred thirty-three million, eight hundred fifty-eight thousand, four hundred twenty-eight".