33081320 has 32 divisors (see below), whose sum is σ = 78813000. Its totient is φ = 12453888.

The previous prime is 33081311. The next prime is 33081353. The reversal of 33081320 is 2318033.

It can be written as a sum of positive squares in 4 ways, for example, as 29008996 + 4072324 = 5386^2 + 2018^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 33081292 and 33081301.

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, 23645 + ... + 25004.

Almost surely, 2^33081320 is an apocalyptic number.

It is an amenable number.

33081320 is an abundant number, since it is smaller than the sum of its proper divisors (45731680).

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

33081320 is a wasteful number, since it uses less digits than its factorization.

33081320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48677 (or 48673 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 33081320 is about 5751.6362889181. The cubic root of 33081320 is about 321.0166882820.

Adding to 33081320 its reverse (2318033), we get a palindrome (35399353).

The spelling of 33081320 in words is "thirty-three million, eighty-one thousand, three hundred twenty".