33428547 has 12 divisors (see below), whose sum is σ = 48755824. Its totient is φ = 22068720.

The previous prime is 33428513. The next prime is 33428569. The reversal of 33428547 is 74582433.

It is a happy number.

33428547 is a `hidden beast` number, since 334 + 285 + 47 = 666.

It is not a de Polignac number, because 33428547 - 2¹⁰ = 33427523 is a prime.

It is a super-2 number, since 2×33428547² = 2234935509062418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33428047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17104 + ... + 18957.

Almost surely, 2^33428547 is an apocalyptic number.

33428547 is a deficient number, since it is larger than the sum of its proper divisors (15327277).

33428547 is a wasteful number, since it uses less digits than its factorization.

33428547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36170 (or 36167 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 33428547 is about 5781.7425573957. The cubic root of 33428547 is about 322.1359295194.

The spelling of 33428547 in words is "thirty-three million, four hundred twenty-eight thousand, five hundred forty-seven".