33036421 has 16 divisors (see below), whose sum is σ = 39168000. Its totient is φ = 27529200.

The previous prime is 33036413. The next prime is 33036433. The reversal of 33036421 is 12463033.

It is a cyclic number.

It is not a de Polignac number, because 33036421 - 2³ = 33036413 is a prime.

It is a super-3 number, since 3×33036421³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33036392 and 33036401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33036121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3930 + ... + 9028.

It is an arithmetic number, because the mean of its divisors is an integer number (2448000).

Almost surely, 2^33036421 is an apocalyptic number.

33036421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33036421 is a deficient number, since it is larger than the sum of its proper divisors (6131579).

33036421 is a wasteful number, since it uses less digits than its factorization.

33036421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 33036421 is about 5747.7318135070. The cubic root of 33036421 is about 320.8713912388.

Adding to 33036421 its reverse (12463033), we get a palindrome (45499454).

The spelling of 33036421 in words is "thirty-three million, thirty-six thousand, four hundred twenty-one".