33748221 has 8 divisors (see below), whose sum is σ = 48459040. Its totient is φ = 20768112.

The previous prime is 33748201. The next prime is 33748229. The reversal of 33748221 is 12284733.

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

It is not a de Polignac number, because 33748221 - 2⁷ = 33748093 is a prime.

It is a super-2 number, since 2×33748221² = 2277884841329682, 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 (33748229) 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, 432631 + ... + 432708.

It is an arithmetic number, because the mean of its divisors is an integer number (6057380).

Almost surely, 2^33748221 is an apocalyptic number.

It is an amenable number.

33748221 is a deficient number, since it is larger than the sum of its proper divisors (14710819).

33748221 is a wasteful number, since it uses less digits than its factorization.

33748221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865355.

The product of its digits is 8064, while the sum is 30.

The square root of 33748221 is about 5809.3219053518. The cubic root of 33748221 is about 323.1595252727.

The spelling of 33748221 in words is "thirty-three million, seven hundred forty-eight thousand, two hundred twenty-one".