33408445 has 12 divisors (see below), whose sum is σ = 46635804. Its totient is φ = 22908480.

The previous prime is 33408439. The next prime is 33408457. The reversal of 33408445 is 54480433.

It can be written as a sum of positive squares in 2 ways, for example, as 22259524 + 11148921 = 4718^2 + 3339^2 .

It is not a de Polignac number, because 33408445 - 2¹¹ = 33406397 is a prime.

It is a super-2 number, since 2×33408445² = 2232248394636050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67936 + ... + 68425.

It is an arithmetic number, because the mean of its divisors is an integer number (3886317).

Almost surely, 2^33408445 is an apocalyptic number.

33408445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

33408445 is a deficient number, since it is larger than the sum of its proper divisors (13227359).

33408445 is a wasteful number, since it uses less digits than its factorization.

33408445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136380 (or 136373 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 33408445 is about 5780.0038927323. The cubic root of 33408445 is about 322.0713452495.

Adding to 33408445 its reverse (54480433), we get a palindrome (87888878).

The spelling of 33408445 in words is "thirty-three million, four hundred eight thousand, four hundred forty-five".