33032421 has 16 divisors (see below), whose sum is σ = 50625600. Its totient is φ = 21261744.

The previous prime is 33032371. The next prime is 33032437. The reversal of 33032421 is 12423033.

It is not a de Polignac number, because 33032421 - 2⁶ = 33032357 is a prime.

It is a super-2 number, since 2×33032421² = 2182281674242482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33032394 and 33032403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33032221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20311 + ... + 21876.

It is an arithmetic number, because the mean of its divisors is an integer number (3164100).

Almost surely, 2^33032421 is an apocalyptic number.

It is an amenable number.

33032421 is a deficient number, since it is larger than the sum of its proper divisors (17593179).

33032421 is a wasteful number, since it uses less digits than its factorization.

33032421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42225 (or 42219 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 33032421 is about 5747.3838396265. The cubic root of 33032421 is about 320.8584405081.

Adding to 33032421 its reverse (12423033), we get a palindrome (45455454).

The spelling of 33032421 in words is "thirty-three million, thirty-two thousand, four hundred twenty-one".