33487421 has 8 divisors (see below), whose sum is σ = 36775488. Its totient is φ = 30240000.

The previous prime is 33487417. The next prime is 33487423. The reversal of 33487421 is 12478433.

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 33487421 - 2² = 33487417 is a prime.

It is a super-2 number, since 2×33487421² = 2242814730462482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33487423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8420 + ... + 11741.

It is an arithmetic number, because the mean of its divisors is an integer number (4596936).

Almost surely, 2^33487421 is an apocalyptic number.

It is an amenable number.

33487421 is a deficient number, since it is larger than the sum of its proper divisors (3288067).

33487421 is a wasteful number, since it uses less digits than its factorization.

33487421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20323.

The product of its digits is 16128, while the sum is 32.

The square root of 33487421 is about 5786.8316892752. The cubic root of 33487421 is about 322.3249327257.

The spelling of 33487421 in words is "thirty-three million, four hundred eighty-seven thousand, four hundred twenty-one".