33630421 has 8 divisors (see below), whose sum is σ = 37031904. Its totient is φ = 30286320.

The previous prime is 33630391. The next prime is 33630431. The reversal of 33630421 is 12403633.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33630421 - 2¹⁹ = 33106133 is a prime.

It is a super-2 number, since 2×33630421² = 2262010433274482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33630392 and 33630401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33630431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13110 + ... + 15463.

It is an arithmetic number, because the mean of its divisors is an integer number (4628988).

Almost surely, 2^33630421 is an apocalyptic number.

It is an amenable number.

33630421 is a deficient number, since it is larger than the sum of its proper divisors (3401483).

33630421 is a wasteful number, since it uses less digits than its factorization.

33630421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28691.

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

The square root of 33630421 is about 5799.1741653446. The cubic root of 33630421 is about 322.7830849738.

The spelling of 33630421 in words is "thirty-three million, six hundred thirty thousand, four hundred twenty-one".