133810828 has 6 divisors (see below), whose sum is σ = 234168956. Its totient is φ = 66905412.

The previous prime is 133810823. The next prime is 133810841. The reversal of 133810828 is 828018331.

It is a junction number, because it is equal to n+sod(n) for n = 133810793 and 133810802.

It is not an unprimeable number, because it can be changed into a prime (133810823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16726350 + ... + 16726357.

Almost surely, 2^133810828 is an apocalyptic number.

It is an amenable number.

133810828 is a deficient number, since it is larger than the sum of its proper divisors (100358128).

133810828 is a wasteful number, since it uses less digits than its factorization.

133810828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33452711 (or 33452709 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 133810828 is about 11567.6630310534. The cubic root of 133810828 is about 511.4820761546.

The spelling of 133810828 in words is "one hundred thirty-three million, eight hundred ten thousand, eight hundred twenty-eight".