33280147 has 4 divisors (see below), whose sum is σ = 33305760. Its totient is φ = 33254536.

The previous prime is 33280133. The next prime is 33280171. The reversal of 33280147 is 74108233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74108233 = 151 ⋅490783.

It is a cyclic number.

It is not a de Polignac number, because 33280147 - 2¹¹ = 33278099 is a prime.

It is a super-2 number, since 2×33280147² = 2215136368683218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33280187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10747 + ... + 13492.

It is an arithmetic number, because the mean of its divisors is an integer number (8326440).

Almost surely, 2^33280147 is an apocalyptic number.

33280147 is a deficient number, since it is larger than the sum of its proper divisors (25613).

33280147 is a wasteful number, since it uses less digits than its factorization.

33280147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25612.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 33280147 is about 5768.8947814984. The cubic root of 33280147 is about 321.6585342815.

The spelling of 33280147 in words is "thirty-three million, two hundred eighty thousand, one hundred forty-seven".