33328730 has 16 divisors (see below), whose sum is σ = 60077160. Its totient is φ = 13312512.

The previous prime is 33328727. The next prime is 33328739. The reversal of 33328730 is 3782333.

It can be written as a sum of positive squares in 4 ways, for example, as 33051001 + 277729 = 5749^2 + 527^2 .

It is a super-2 number, since 2×33328730² = 2221608486825800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33328693 and 33328702.

It is not an unprimeable number, because it can be changed into a prime (33328739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6626 + ... + 10514.

Almost surely, 2^33328730 is an apocalyptic number.

33328730 is a deficient number, since it is larger than the sum of its proper divisors (26748430).

33328730 is a wasteful number, since it uses less digits than its factorization.

33328730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4753.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 33328730 is about 5773.1040177707. The cubic root of 33328730 is about 321.8149792883.

The spelling of 33328730 in words is "thirty-three million, three hundred twenty-eight thousand, seven hundred thirty".