33297993 has 8 divisors (see below), whose sum is σ = 49330400. Its totient is φ = 22198644.

The previous prime is 33297989. The next prime is 33298033. The reversal of 33297993 is 39979233.

It is not a de Polignac number, because 33297993 - 2² = 33297989 is a prime.

It is a super-2 number, since 2×33297993² = 2217512675656098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33297923) 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 7 ways as a sum of consecutive naturals, for example, 616603 + ... + 616656.

It is an arithmetic number, because the mean of its divisors is an integer number (6166300).

Almost surely, 2^33297993 is an apocalyptic number.

It is an amenable number.

33297993 is a deficient number, since it is larger than the sum of its proper divisors (16032407).

33297993 is a wasteful number, since it uses less digits than its factorization.

33297993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233268 (or 1233262 counting only the distinct ones).

The product of its digits is 275562, while the sum is 45.

The square root of 33297993 is about 5770.4413176117. The cubic root of 33297993 is about 321.7160189280.

The spelling of 33297993 in words is "thirty-three million, two hundred ninety-seven thousand, nine hundred ninety-three".