133197232 has 80 divisors (see below), whose sum is σ = 318551040. Its totient is φ = 52690176.

The previous prime is 133197223. The next prime is 133197241. The reversal of 133197232 is 232791331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (133197223) and next prime (133197241).

It is a super-2 number, since 2×133197232² = 35483005224923648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133197194 and 133197203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73813 + ... + 75595.

It is an arithmetic number, because the mean of its divisors is an integer number (3981888).

Almost surely, 2^133197232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133197232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159275520).

133197232 is an abundant number, since it is smaller than the sum of its proper divisors (185353808).

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

133197232 is a wasteful number, since it uses less digits than its factorization.

133197232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850 (or 1844 counting only the distinct ones).

The product of its digits is 6804, while the sum is 31.

The square root of 133197232 is about 11541.1105184900. The cubic root of 133197232 is about 510.6990695247.

The spelling of 133197232 in words is "one hundred thirty-three million, one hundred ninety-seven thousand, two hundred thirty-two".