33430720 has 28 divisors (see below), whose sum is σ = 79607664. Its totient is φ = 13372160.

The previous prime is 33430699. The next prime is 33430723. The reversal of 33430720 is 2703433.

It is a super-2 number, since 2×33430720² = 2235226079436800, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 33430691 and 33430700.

It is not an unprimeable number, because it can be changed into a prime (33430723) 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 3 ways as a sum of consecutive naturals, for example, 51916 + ... + 52555.

Almost surely, 2^33430720 is an apocalyptic number.

It is an amenable number.

33430720 is an abundant number, since it is smaller than the sum of its proper divisors (46176944).

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

33430720 is a wasteful number, since it uses less digits than its factorization.

33430720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104488 (or 104478 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 22.

The square root of 33430720 is about 5781.9304734665. The cubic root of 33430720 is about 322.1429094439.

The spelling of 33430720 in words is "thirty-three million, four hundred thirty thousand, seven hundred twenty".