133198620 has 24 divisors (see below), whose sum is σ = 372956304. Its totient is φ = 35519616.

The previous prime is 133198609. The next prime is 133198633. The reversal of 133198620 is 26891331.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1109929 + ... + 1110048.

It is an arithmetic number, because the mean of its divisors is an integer number (15539846).

Almost surely, 2^133198620 is an apocalyptic number.

133198620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133198620 is an abundant number, since it is smaller than the sum of its proper divisors (239757684).

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

133198620 is a wasteful number, since it uses less digits than its factorization.

133198620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219989 (or 2219987 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 133198620 is about 11541.1706511948. The cubic root of 133198620 is about 510.7008434551.

The spelling of 133198620 in words is "one hundred thirty-three million, one hundred ninety-eight thousand, six hundred twenty".